Study type: animal

1999 · Manual

Across six groups (n=90/group; total n=540), FM RF exposure (836.55 MHz) produced no observed changes in survival, number/incidence, or histological type of spontaneous or ENU-induced CNS tumors. ENU significantly increased CNS tumor incidence and reduced survival, but these effects were not attributed to FM field exposure.

Study URL: https://aacrjournals.org/cancerres/article-pdf/60/7/1857/3240743/ch070001857p.pdf

Study type: in_vitro

Bioelectrochemistry and bioenergetics (Lausanne, Switzerland) · 1999 · PubMed

Cell cultures exposed to a GSM-simulated 960 MHz field in a TEM cell showed a significant change in cell proliferation compared with non-exposed controls at both 39°C and 35±0.1°C. Sham-exposed cells under the same temperature conditions showed no significant change in proliferation.

DOI: 10.1016/s0302-4598(98)00238-4 · PMID: 10228585

Study URL: https://pubmed.ncbi.nlm.nih.gov/10228585/

Study type: cohort

Wiadomosci lekarskie (Warsaw, Poland : 1960) · 1999 · PubMed

Among workers at a retransmission TV center and a satellite communications center, increased IgG and IgA concentrations and decreased lymphocyte and T8 cell counts were reported. Among radar operators, IgM concentration was elevated and total T8 cell count decreased. The abstract states these immunological changes did not cause clinical consequences.

PMID: 10335122

Study URL: https://pubmed.ncbi.nlm.nih.gov/10335122/

Reproductive toxicology (Elmsford, N.Y.) · 1999 · PubMed

DOI: 10.1016/s0890-6238(99)00006-4 · PMID: 10378472

Study URL: https://pubmed.ncbi.nlm.nih.gov/10378472/

Biulleten' eksperimental'noi biologii i meditsiny · 1999 · PubMed

PMID: 10399569

Study URL: https://pubmed.ncbi.nlm.nih.gov/10399569/

Study type: animal

Biofizika · 1999 · PubMed

Two-step exposure effects depended on the time interval between exposures and pulse duration. The biologically active dose of microwave radiation was reported to be much lower than that of infrared laser radiation, while laser radiation induced a stronger cellular response. Microwaves were found to enhance the efficiency of infrared laser radiation.

PMID: 10418688

Study URL: https://pubmed.ncbi.nlm.nih.gov/10418688/

Study type: animal

Arhiv za higijenu rada i toksikologiju · 1999 · PubMed

In irradiated rats, peripheral blood results suggested a decreasing tendency in total leukocyte count and relative lymphocyte count. Slight increases were observed in granulocyte count and in absolute peripheral blood erythrocyte count compared with controls.

PMID: 10457649

Study URL: https://pubmed.ncbi.nlm.nih.gov/10457649/

Study type: in_vitro

Journal of applied microbiology · 1999 · PubMed

Staphylococcus aureus on stainless steel discs exposed to 2450 MHz microwave radiation (up to 800 W) showed reduced viability with increasing exposure time, with complete inactivation at 110 s when temperature reached 61.4b0C. The report concludes the killing pattern was mainly due to heat transfer from the stainless steel substrate, with little direct microwave energy absorbed by the bacteria-liquid medium.

DOI: 10.1046/j.1365-2672.1999.00832.x · PMID: 10540242

Study URL: https://pubmed.ncbi.nlm.nih.gov/10540242/

Study type: cohort

Chemosphere · 1999 · PubMed

Compared to controls, occupationally exposed subjects showed an increased frequency of micronuclei and disturbances in the distribution of cells across the first, second, and third mitotic divisions.

DOI: 10.1016/s0045-6535(99)00139-3 · PMID: 10576101

Study URL: https://pubmed.ncbi.nlm.nih.gov/10576101/

Study type: other

Journal of agricultural and food chemistry · 1999 · PubMed

A designed microwave applicator was used to study mushroom polyphenoloxidase (PPO) inactivation at 2450 MHz. Microwave and conventional heating produced different enzyme intermediates with different stability and kinetic properties, and microwave treatment achieved inactivation in less time than conventional hot-water treatment. The fast microwave treatment was associated with increased antioxidant content and decreased browning.

DOI: 10.1021/jf980945o · PMID: 10552603

Study URL: https://pubmed.ncbi.nlm.nih.gov/10552603/

Study type: engineering

IEEE transactions on bio-medical engineering · 1999 · PubMed

Numerical modeling (FDTD EM calculations plus bioheat equation) estimated induced electric fields, SAR, and resulting transient and steady-state temperature rises for half-wave dipoles at 900 and 1900 MHz near multiple tissue/head models. Calculated SAR values agreed well with an empirical correlation due to Kuster. The authors state that if hazard is limited by excessive temperature increase, present exposure limits are very conservative and simpler guidelines might still provide adequate protection.

DOI: 10.1109/10.775400 · PMID: 10431455

Study URL: https://pubmed.ncbi.nlm.nih.gov/10431455/

Study type: animal

Bioelectrochemistry and bioenergetics (Lausanne, Switzerland) · 1999 · PubMed

Whole-body microwave sinusoidal irradiation (8.15–18 GHz; power density 1 µW/cm²) significantly enhanced TNF production in peritoneal macrophages and splenic T lymphocytes and facilitated T-cell proliferation in response to mitogenic stimulation. Exposure for 24 h increased TNF production and immune proliferative response, with stimulatory effects persisting for more than 3 days after exposure ended. Chronic irradiation for 7 days decreased TNF production in peritoneal macrophages.

DOI: 10.1016/s0302-4598(99)00058-6 · PMID: 10619445

Study URL: https://pubmed.ncbi.nlm.nih.gov/10619445/

Study type: animal

Bioelectrochemistry and bioenergetics (Lausanne, Switzerland) · 1999 · PubMed

Microwave radiation at 8.15–18 GHz and 1 microW/cm2 for a single 5 h whole-body exposure increased TNF production in peritoneal macrophages and splenic T cells, increased mitogenic response in T lymphocytes, and was associated with activation of cellular immunity within 3 days. A diet containing beta-carotene, alpha-tocopherol, and ubiquinone Q9 increased activity of macrophages and T cells from irradiated mice and was reported to enhance the microwave effect at later times.

DOI: 10.1016/s0302-4598(99)00059-8 · PMID: 10619446

Study URL: https://pubmed.ncbi.nlm.nih.gov/10619446/

Study type: exposure_assessment

American Industrial Hygiene Association journal · 1999 · PubMed

Across 986 power-density measurements, 4 exceeded 5 mW/cm2 (IRPA/NCRP limit) but none exceeded 10 mW/cm2 (ACGIH/ANSI/IEEE/OSHA). The 4 higher readings were maximum power density measurements taken directly in front of the radar. Of 812 measurements at approximated seated ocular and testicular positions, none exceeded 0.04 mW/cm2 (maximum 0.034 mW/cm2), which the authors state is <1% of the most conservative current safety standards.

DOI: 10.1080/00028899908984500 · PMID: 10671181

Study URL: https://pubmed.ncbi.nlm.nih.gov/10671181/

Study type: animal

Bioelectromagnetics · 1999 · PubMed

Mice exposed to a 50 Hz, 2 mT (rms) electromagnetic field (8 h/day) showed a significant increase in conversion of [14C]-NDEA to exhaled 14CO2 at 6 and 8 weeks of exposure (reported as 26.9% and 37.4%, respectively, vs 22.8% within 1 h after administration). The authors interpret the increased metabolism as potentially reducing the bioactive carcinogen burden.

DOI: 10.1002/(sici)1521-186x(1999)20:1<1::aid-bem1>3.0.co;2-5 · PMID: 9915587

Study URL: https://pubmed.ncbi.nlm.nih.gov/9915587/

Study type: other

Bioelectromagnetics · 1999 · PubMed

Diatom motility in three strains of Amphora coffeaeformis was positively correlated with extracellular Ca2+ concentration. Exposure to a combination of static and alternating EMFs calculated at calcium resonance values produced no significant increase in diatom motility compared with sham exposure.

DOI: 10.1002/(sici)1521-186x(1999)20:2<94::aid-bem3>3.0.co;2-q · PMID: 10029135

Study URL: https://pubmed.ncbi.nlm.nih.gov/10029135/

Study type: case_control

American journal of industrial medicine · 1999 · PubMed

Compared with mothers in occupations with little potential for EMF exposure during pregnancy, risks of all childhood cancers were close to unity for children of sewing machinists (RR 0.72, 95% CI 0.42–1.25) and for children of other machinists/other jobs with likely higher EMF exposures (RR 0.93, 95% CI 0.61–1.41). Risks for childhood leukemias and brain cancers were described as similarly unexceptional, and adjustment for social class, maternal age, and sibship position had little effect.

DOI: 10.1002/(sici)1097-0274(199904)35:4<348::aid-ajim5>3.0.co;2-x · PMID: 10086211

Study URL: https://pubmed.ncbi.nlm.nih.gov/10086211/

Study type: other

Journal of sleep research · 1999 · PubMed

In 18 healthy subjects, sleep during exposure to a 50 Hz/1 µT electrical field was associated with reduced total sleep time, sleep efficiency, stages 3+4 slow wave sleep, and slow wave activity compared with no exposure. Circulating melatonin, growth hormone, prolactin, testosterone, and cortisol were not affected.

DOI: 10.1046/j.1365-2869.1999.00100.x · PMID: 10188140

Study URL: https://pubmed.ncbi.nlm.nih.gov/10188140/

Study type: animal

International journal of radiation biology · 1999 · PubMed

Under the specified static and time-varying EMF “calcium resonance” conditions (B(V)=0 µT; B(H)=20.9 µT; B(AC)=41.8 µT peak-peak at 16 Hz), there was no significant difference in motility between EMF-exposed and control diatoms at each Ca2+ concentration tested.

DOI: 10.1080/095530099140564 · PMID: 10203189

Study URL: https://pubmed.ncbi.nlm.nih.gov/10203189/

Study type: exposure_assessment

International journal of occupational medicine and environmental health · 1999 · PubMed

The paper analyzes radiation intensity characteristics of GSM base station antennas using EMF measurements conducted by experts from two research institutes; for inaccessible antennas, measurements were performed in an accredited laboratory.

PMID: 10360084

Study URL: https://pubmed.ncbi.nlm.nih.gov/10360084/

Study type: in_vitro

Carcinogenesis · 1999 · PubMed

Human breast epithelial cells exposed to pure, linearly polarized 60 Hz magnetic fields at 0.1, 1.0, or 10.0 G for 20 min to 24 h showed no statistically significant changes in basal c-myc transcript levels versus sham controls (<0.001 G). EMF exposure also did not affect 12-O-tetradecanoylphorbol-13-acetate-induced changes in c-myc, and transcript levels of several other cancer-associated genes (c-erbB-2, p53, p21, GADD45, bax, bcl-x, mcl-1, c-fos) were unaffected.

DOI: 10.1093/carcin/20.8.1633 · PMID: 10426819

Study URL: https://pubmed.ncbi.nlm.nih.gov/10426819/

Study type: exposure_assessment

Intensive care medicine · 1999 · PubMed

AC 50 Hz magnetic flux density around ICU devices was non-uniform, with higher values (up to 40 microT) close to fan motors and mains supply. In 83% of patients, field intensity at the patient’s head exceeded 0.20 microT (stated safety limit).

DOI: 10.1007/s001340050963 · PMID: 10447544

Study URL: https://pubmed.ncbi.nlm.nih.gov/10447544/

Study type: case_control

Alzheimer disease and associated disorders · 1999 · PubMed

In conditional logistic regression analyses stratified by industrial hygienist (IH) rater and adjusted for age and education, odds ratios for ever having been exposed to EMF were 0.74 (95% CI 0.29–1.92) and 0.95 (95% CI 0.27–2.43). No dose-response effect was observed, and the study did not support an association between occupational EMF exposure and AD.

DOI: 10.1097/00002093-199907000-00009 · PMID: 10485576

Study URL: https://pubmed.ncbi.nlm.nih.gov/10485576/

Study type: in_vitro

Radiation and environmental biophysics · 1999 · PubMed

Exposure to sinusoidal ELF-EMF (7–8 mT, 20 Hz) for 60 min increased PKA activity in human skin fibroblasts (~2-fold) and rat embryonic osteoblasts (~1.7-fold). With long-term exposure up to 7 days (1 h-on/1 h-off), PKA activity showed transient stimulation during the first two exposure rhythms and then decreased back to baseline levels of sham-exposed controls.

DOI: 10.1007/s004110050155 · PMID: 10525956

Study URL: https://pubmed.ncbi.nlm.nih.gov/10525956/

Study type: in_vitro

Immunobiology · 1999 · PubMed

Flow cytometry showed CD surface marker expression was weakly influenced overall, with no differences between exposed and non-exposed cells for several markers. Evidence of CD4 protein production was reported in lymphocytes exposed to ELF-EMF (immunofluorescence, Western blotting, RT-PCR). CD16 and CD14 expression were affected at 24, 48, and 72 h, and after 48 h exposure an increase in S-phase cells was observed versus non-exposed cells.

DOI: 10.1016/s0171-2985(99)80045-x · PMID: 10532279

Study URL: https://pubmed.ncbi.nlm.nih.gov/10532279/

Study type: animal

Environmental health perspectives · 1999 · PubMed

EMF exposure affected plasma melatonin in male kestrels, with suppression at 42 days and elevation at 70 days of exposure, suggesting a seasonal phase-shift in the melatonin profile. Melatonin was suppressed in long-term fledglings but not in short-term fledglings or adult females. Melatonin and body mass were not associated.

DOI: 10.1289/ehp.99107901 · PMID: 10544158

Study URL: https://pubmed.ncbi.nlm.nih.gov/10544158/

Study type: randomized_trial

Neuroscience letters · 1999 · PubMed

During an entire night of intermittent 900 MHz exposure (max SAR 1 W/kg), waking after sleep onset was reduced (18 to 12 min) compared with a sham-exposure control night. Non-REM sleep EEG spectral power increased, with the largest rise in the 10–11 Hz and 13.5–14 Hz bands early in sleep, then subsiding.

DOI: 10.1016/s0304-3940(99)00770-3 · PMID: 10580711

Study URL: https://pubmed.ncbi.nlm.nih.gov/10580711/

Study type: exposure_assessment

Medycyna pracy · 1999 · PubMed

EMF measurements around 464 industrial sewing machines in five sewing works indicated exposure to 60 Hz EMF. Thirteen machine types were identified, and analysis of variance suggested that EMF emissions differed substantially by machine type. Machines were grouped by emission level into weak (0–1.5 A/m), medium (2–4 A/m), and strong (9–16 A/m) categories.

PMID: 10582206

Study URL: https://pubmed.ncbi.nlm.nih.gov/10582206/

Study type: in_vitro

Molecular and cellular biochemistry · 1999 · PubMed

CD4+ cell surface receptor expression measured by FACScan was not statistically significantly different between ELF-EMF exposed and unexposed PBMC at 24, 48, and 72 h, though a slight difference in bound antibody distribution was noted at 24 and 72 h. CD4+ DNA expression was reported to strongly increase in exposed cells (resting and PHA-activated), and CD4+ mRNA increased at 24 h in resting cells but not at 48 or 72 h. Exposed PBMC showed a significant increase in the percentage of cells in S phase, with no differences in G1 or G2.

DOI: 10.1023/a:1007004316433 · PMID: 10630622

Study URL: https://pubmed.ncbi.nlm.nih.gov/10630622/

Study type: review

Annals of the New York Academy of Sciences · 1999 · PubMed

The paper discusses uncertainty in hazard identification for 5060 Hz electric and magnetic fields and cancer, emphasizing how to synthesize epidemiological, experimental, and background information. It notes that epidemiological studies show a somewhat consistent pattern indicating increased risk for childhood leukemia and adult chronic lymphatic leukemia, and possibly other leukemias and brain cancer, while also highlighting the lack of a good candidate mechanism and the cautious interpretation of the evidence.

DOI: 10.1111/j.1749-6632.1999.tb08075.x · PMID: 10676407

Study URL: https://pubmed.ncbi.nlm.nih.gov/10676407/

Study type: animal

In vivo (Athens, Greece) · 1999 · PubMed

CBA mice exposed outdoors to 50 Hz EMF (~8 microT rms) from a 220 kV transmission line showed a highly significant change in comet assay tail/head ratio after 32 days (p<0.001), interpreted as DNA damage in brain cells. A decreased number of mononuclear leukocytes was observed after 20 days of exposure (0.02<p<0.05).

PMID: 10757046

Study URL: https://pubmed.ncbi.nlm.nih.gov/10757046/

Study type: other

Meditsina truda i promyshlennaia ekologiia · 1999 · PubMed

Cytologic investigations identified sensitive blood-system indices during EMF exposure, including disorders of megakaryocyte differentiation and nonspecific reactions. The abstract reports threshold-like intensity levels: effects at allowable levels were described as below activation of adaptive reactions (<0.01 mV/cm2), occupational conditions at compensatory processes (0.05–0.1 mV/cm2), and intensities >0.5 mV/cm2 were estimated as critical; megakaryocyte involution and leukocyte structural disturbances were proposed as EMF markers for express-diagnostic.

PMID: 11965742

Study URL: https://pubmed.ncbi.nlm.nih.gov/11965742/

Study type: randomized_trial

Plastic and reconstructive surgery · 1999 · PubMed

In a double-blind comparison of magnet patches versus sham patches (10 patients per group), the treatment group had significant reductions in pain (postoperative days 1–7), edema (days 1–4), and discoloration/ecchymosis (days 1–3) compared with controls.

DOI: 10.1097/00006534-199912000-00051 · PMID: 11149796

Study URL: https://pubmed.ncbi.nlm.nih.gov/11149796/

Plastic and reconstructive surgery · 1999 · PubMed

DOI: 10.1097/00006534-199912000-00072 · PMID: 11149807

Study URL: https://pubmed.ncbi.nlm.nih.gov/11149807/

Study type: randomized_trial

International journal of radiation biology · 1999 · PubMed

Across both groups, the only cognitive test affected was choice reaction time, which decreased (faster responses) during exposure conditions; effects were stronger in the analogue simulation and less in the digital simulation. No changes were observed in word, number, or picture recall, or in spatial memory.

DOI: 10.1080/095530099140375 · PMID: 10331850

Study URL: https://pubmed.ncbi.nlm.nih.gov/10331850/

Study type: in_vitro

International journal of radiation biology · 1999 · PubMed

After 24 h of culture following exposure, the 0.5 T static magnetic field reduced CD69 expression in PBMC in vitro; this reduction was enhanced after PHA stimulation. IFN-gamma and IL-4 release increased, but these increases were reduced after PHA stimulation. TNF-alpha, IL-6 and IL-10 release were not modified.

DOI: 10.1080/095530099140384 · PMID: 10331851

Study URL: https://pubmed.ncbi.nlm.nih.gov/10331851/

Study type: in_vitro

International journal of radiation biology · 1999 · PubMed

Across a 5 h period, [3H]uridine incorporation into total RNA and mRNA increased over time in all cells, but 50 Hz magnetic field exposure (2 microT to 20 mT) had no detectable effect on the synthesis rate of total or messenger RNA compared with controls.

DOI: 10.1080/095530099140294 · PMID: 10374947

Study URL: https://pubmed.ncbi.nlm.nih.gov/10374947/

Study type: randomized_trial

Headache · 1999 · PubMed

In the first month of follow-up, 73% of participants receiving actual pulsing electromagnetic field exposure reported decreased headaches versus about half in the placebo group. Participants who received additional actual exposure also reported decreased headache activity. The authors conclude pulsing electromagnetic field exposure for at least 3 weeks is an effective short-term intervention for migraine but not tension headaches.

DOI: 10.1046/j.1526-4610.1999.3908567.x · PMID: 11279973

Study URL: https://pubmed.ncbi.nlm.nih.gov/11279973/

Study type: other

Journal of plant research · 1999 · PubMed

Roots grown in microgravity had higher growth rates than ground controls. Immediately upon application of an applied electric field, root elongation was inhibited in microgravity-grown roots.

DOI: 10.1007/pl00013905 · PMID: 11543178

Study URL: https://pubmed.ncbi.nlm.nih.gov/11543178/

Study type: animal

Advances in space research : the official journal of the Committee on Space Research (COSPAR) · 1999 · PubMed

Compared with normal geomagnetic conditions, epicotyl elongation was promoted under low magnetic field (LMF), most prominently in the middle part of the epicotyl. Epidermal cells exposed to LMF showed cell elongation and increased osmotic pressure of cell sap. Under 1G, seedlings in both LMF and normal geomagnetic field grew straight upward with similar amyloplast sedimentation, while under simulated microgravity (clinostat) epicotyl/cell elongation was promoted and epicotyls bent with dispersed amyloplasts.

DOI: 10.1016/s0273-1177(99)00342-7 · PMID: 11710386

Study URL: https://pubmed.ncbi.nlm.nih.gov/11710386/

Study type: other

Hang tian yi xue yu yi xue gong cheng = Space medicine & medical engineering · 1999 · PubMed

During simulated weightlessness (head-down tilt -10°), the amplitude of slow positive potentials decreased significantly, especially at 100 min after HDT. This decrease was not significant after 5 Hz extremely low frequency magnetic field stimulation.

PMID: 11766706

Study URL: https://pubmed.ncbi.nlm.nih.gov/11766706/

Study type: other

Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics · 1999 · PubMed

A theoretical framework (Langevin equation averaged to an infinite hierarchy of differential-recurrence equations) is solved using a matrix continued fraction method to calculate relaxation functions and relaxation times for transient dynamic Kerr effect and nonlinear dielectric relaxation after sudden changes in magnitude/direction of a strong DC field. Results are compared with available experimental data and with previously obtained solutions for particular cases.

DOI: 10.1103/physreve.60.1475 · PMID: 11969906

Study URL: https://pubmed.ncbi.nlm.nih.gov/11969906/

Study type: other

Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics · 1999 · PubMed

A theoretical analysis suggests a magnetic field can affect single-bubble sonoluminescence in water by altering bubble dynamics via Lorentz-force torque on moving water molecules’ electrical dipole moments, transforming some kinetic energy into heat. The magnetic field is described as acting as if the ambient pressure were increased, with a suggested stronger effect as the amount of liquid water increases. The paper predicts no magnetic-field effect in a nonpolar liquid such as dodecane.

DOI: 10.1103/physreve.60.1759 · PMID: 11969959

Study URL: https://pubmed.ncbi.nlm.nih.gov/11969959/

Study type: other

Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics · 1999 · PubMed

Using a linear optical technique, the study measured relaxation times of ferronematic lyotropic liquid crystals under combined static and pulsed magnetic fields as a function of pulse width. The abstract discusses a reversible modification of magnetic grain concentration in the bulk and a secondary aggregation process attributed to a field gradient introduced by the pulsed field.

DOI: 10.1103/physreve.60.1815 · PMID: 11969968

Study URL: https://pubmed.ncbi.nlm.nih.gov/11969968/

Study type: other

Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics · 1999 · PubMed

Deuterium NMR monitoring indicated that magnetic-field-induced alignment of directors in a smectic-A sample is qualitatively different from that in nematic samples. Results for the pure mesogen (deuterated at the alpha chain position) were compared with alignment data obtained using deuterium spectra of a small amount of added p-xylene-d(10) solute.

DOI: 10.1103/physreve.60.1831 · PMID: 11969970

Study URL: https://pubmed.ncbi.nlm.nih.gov/11969970/

Study type: other

Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics · 1999 · PubMed

An improved expansion in width is applied to curved domain walls in uniaxial nematic liquid crystals under an external magnetic field, focusing on the case of equal elastic constants. The authors obtain an approximate form of the director field up to second order in the magnetic coherence length.

DOI: 10.1103/physreve.60.1880 · PMID: 11969976

Study URL: https://pubmed.ncbi.nlm.nih.gov/11969976/

Study type: other

Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics · 1999 · PubMed

The paper theoretically derives the critical magnetic field magnitude H(c) (azimuthal, parallel to layers) above which periodic smectic layer distortions are expected and energetically favorable. It also derives critical applied voltage magnitudes U(c) for an electric field case in wedge geometry for various radial sample depths and wedge angles.

DOI: 10.1103/physreve.60.1888 · PMID: 11969977

Study URL: https://pubmed.ncbi.nlm.nih.gov/11969977/

Study type: other

Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics · 1999 · PubMed

An analytic free-energy model is constructed for partially ionized hydrogen plasma in strong magnetic fields (B ~10^12–10^13 G), incorporating fitted atomic binding energies/sizes (including decentered atomic states) and nonideal Coulomb plasma thermodynamic functions. An ionization equilibrium equation accounting for strong-field and nonideality effects is derived and solved iteratively to calculate ionization degrees, occupancies, and the equation of state.

DOI: 10.1103/physreve.60.2193 · PMID: 11970014

Study URL: https://pubmed.ncbi.nlm.nih.gov/11970014/

Study type: other

Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics · 1999 · PubMed

Theoretical analysis indicates the cyclotron system is nonintegrable and shows stochastic behavior when the oscillating electric field is not circularly polarized, particularly where resonance islands overlap. Stochastic layers thin as the polarization approaches circular polarization (pi/2). Increasing electric-field amplitude at fixed polarization leads to reconnection of KAM curves and a topological rearrangement after which phase space is mostly regular trajectories.

DOI: 10.1103/physreve.60.3896 · PMID: 11970224

Study URL: https://pubmed.ncbi.nlm.nih.gov/11970224/

Study type: other

Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics · 1999 · PubMed

Provides an analytic, nonperturbative calculation of inertial-range anisotropic contributions (zero modes) to anomalous scaling exponents zeta(j) for second-order magnetic correlations in a d-dimensional kinematic magnetohydrodynamics problem with a mean magnetic field and rapidly time-varying advecting velocity. For d=3 and xi→0, an explicit expression for zeta(j) is given, and conjectures are made that anisotropic components cannot change the isotropic threshold for the dynamo effect.

DOI: 10.1103/physreve.60.r3483 · PMID: 11970263

Study URL: https://pubmed.ncbi.nlm.nih.gov/11970263/