Zobrazeno 1 - 10
of 45
pro vyhledávání: '"R. F. Wuerker"'
Publikováno v:
Annales Geophysicae, Vol 23, Pp 101-107 (2005)
Interesting, "new", very high peak-power pulsed radio frequency (RF) antennas have been assembled at the HIPAS Observatory (Alaska, USA) and also at the University of California at Los Angeles (UCLA, USA); namely, a pair of quarter wavelength (λ/
Externí odkaz:
https://doaj.org/article/4e0e6ce24a08435c9b7bc82e767d7395
Publikováno v:
Journal of Applied Physics. 77:4899-4902
The optical diagnostic technique of laser‐induced fluorescence has been applied to a low pressure nitrogen discharge generated by radio frequency waves. The first negative system of N+2 was investigated with the use of a tunable dye laser. The radi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f50e5091d692801f8a1beb67d34db52f
https://doi.org/10.1063/1.359294
https://doi.org/10.1063/1.359294
Publikováno v:
Journal of Applied Physics. 75:4906-4909
Laser‐induced fluorescence from a low‐pressure, magnetized, radio‐frequency‐generated plasma was observed for the first negative (1N) system of N+2 (B2Σ+u−X2Σ+g). A tunable dye laser was used to excite the 1N system in the (0‐0) and (0
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fa16053e257cd19cf91a47bd4ea3bf9f
https://doi.org/10.1063/1.355778
https://doi.org/10.1063/1.355778
Publikováno v:
Applied optics. 16(5)
Composite x-ray pinholes having dichroic properties are presented. These pinholes permit both x-ray imaging and visible alignment with micron accuracy by presenting different apparent apertures in these widely disparate regions of the spectrum. Their
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d108037b3802f496bfe16657554f0456
https://pubmed.ncbi.nlm.nih.gov/20168684
https://pubmed.ncbi.nlm.nih.gov/20168684
Autor:
B. Lum, R. F. Wuerker, A. Y. Wong, J. Santoru, M. McCarrick, J. Carroll, C. Schock, G. Wong, W. Huhn, R. Dickman, W. Harrison
Publikováno v:
Radio Science. 25:1269-1282
UCLA's radio frequency ionospheric heater, 25 miles (40 km) east of Fairbanks, Alaska, is described. The heater consists of eight crossed dipole antennas arranged in a circular pattern to give a gain of 18.4 dB over isotropic at 2.85 MHz (˜ 2nd elec
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::58fef359007635cc391df2b42526b3a4
https://doi.org/10.1029/rs025i006p01269
https://doi.org/10.1029/rs025i006p01269
Publikováno v:
Radio Science. 25:1291-1298
We report the successful generation and detection of ELF waves in the frequency range of 6–76 Hz by polar electrojet modification using the High-Power Auroral Stimulation (HIPAS) HF Heater Facility near Fairbanks, Alaska. Magnetic field amplitudes
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::021312ac740f441732b21fc6d0b6847e
https://doi.org/10.1029/rs025i006p01291
https://doi.org/10.1029/rs025i006p01291
Publikováno v:
Radio Science. 25:1299-1309
A new diagnostic consisting of a high-power radio frequency (RF) or microwave transmitter and a ground-based lidar (light detection and ranging) system is proposed for probing the ionosphere at heights of 80–200 km. The high-power transmitter creat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9fb5185b699cd8124c4123b79f6afb52
https://doi.org/10.1029/rs025i006p01299
https://doi.org/10.1029/rs025i006p01299
Publikováno v:
Physical Review A. 50:2978-2980
The ${\mathrm{N}}_{2}$ C $^{3}\mathrm{\ensuremath{\Pi}}_{\mathrm{u}}$ lifetime was measured by laser-induced fluorescence (LIF) in a low-density plasma. To take account of radiation trapping efects, the lifetime was measured as a function of LIF sign
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2c063226a51c29832ddd90b7777898b6
https://doi.org/10.1103/physreva.50.2978
https://doi.org/10.1103/physreva.50.2978
Publikováno v:
Journal of Applied Physics. 75:7237-7239
Variations in electron temperature in a pulsed radio‐frequency nitrogen plasma have been investigated with a floating double‐Langmuir probe and by laser‐induced fluorescence. Observations suggest that the N2(B 3Πg) level is populated by excita
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::12297a13a4d2847b1e80d812c3f5a9f5
https://doi.org/10.1063/1.356681
https://doi.org/10.1063/1.356681
Publikováno v:
The Journal of Chemical Physics. 97:9490-9491
Nitrogen laser‐induced fluorescence from a low‐pressure (≤10−3 torr) radio frequency produced plasma has been observed for the second positive system of N2. A 45.4±0.4 ns lifetime of the C 3Πu(v’=0) state was experimentally measured from
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::22595e7ebcb44aa13e68f3153f40841d
https://doi.org/10.1063/1.463276
https://doi.org/10.1063/1.463276