Precipitation of radiation belt electrons by magnetospherically reflected whistlers
1998
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© 1998 American Geophysical Union
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We use a test particle simulation model based on gyro-averaged equations of motion to study the influence of oblique magnetospherically reflected (MR) whistlers on the near-loss-cone distribution function of radiation belt electrons. We find that MR whistlers originating in lightning can resonantly interact with radiation belt electrons over a broad range of L shells and precipitate higher energy electrons from lower L Shells. Electrons in the energy-range of 1 to 2.6 MeV are precipitated from L = 2, whereas from L = 4 the precipitated electron energy range is 150-220 keV. The precipitated differential electron flux, due to this interaction, is higher for higher L shells, and the maximum value ranges from Phi E-prec(1.11 MeV) 5.2 x 10(-4) electrons cm(-2) s(-1) keV(-1) at L = 2 to Phi E-prec(173 keV) = 4.6 x 10(-1) electrons cm(-2) s(-1) keV(-1) at L = 4. The lifetimes of radiation belt electrons in a given magnetic flux tube around the L shell on which the interaction takes place are ...found to be of the order of several days, comparable to lifetimes corresponding to electron loss induced by hiss, which was heretofore assumed to be the dominant loss mechanism [Lyons et al., 1972]. The minimum electron lifetimes vary from 2.4 days for 1.11 MeV electrons at L = 2 to 4.6 days for 173 keV electrons at L = 4.
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Journal of Geophysical Research - Space Physics, 1998, 103, A5, 9249-9260Колекције
Институција/група
VinčaTY - JOUR AU - Ristić-Đurović, Jasna L. AU - Bell, TF AU - Inan, US PY - 1998 UR - https://vinar.vin.bg.ac.rs/handle/123456789/2140 AB - We use a test particle simulation model based on gyro-averaged equations of motion to study the influence of oblique magnetospherically reflected (MR) whistlers on the near-loss-cone distribution function of radiation belt electrons. We find that MR whistlers originating in lightning can resonantly interact with radiation belt electrons over a broad range of L shells and precipitate higher energy electrons from lower L Shells. Electrons in the energy-range of 1 to 2.6 MeV are precipitated from L = 2, whereas from L = 4 the precipitated electron energy range is 150-220 keV. The precipitated differential electron flux, due to this interaction, is higher for higher L shells, and the maximum value ranges from Phi E-prec(1.11 MeV) 5.2 x 10(-4) electrons cm(-2) s(-1) keV(-1) at L = 2 to Phi E-prec(173 keV) = 4.6 x 10(-1) electrons cm(-2) s(-1) keV(-1) at L = 4. The lifetimes of radiation belt electrons in a given magnetic flux tube around the L shell on which the interaction takes place are found to be of the order of several days, comparable to lifetimes corresponding to electron loss induced by hiss, which was heretofore assumed to be the dominant loss mechanism [Lyons et al., 1972]. The minimum electron lifetimes vary from 2.4 days for 1.11 MeV electrons at L = 2 to 4.6 days for 173 keV electrons at L = 4. T2 - Journal of Geophysical Research - Space Physics T1 - Precipitation of radiation belt electrons by magnetospherically reflected whistlers VL - 103 IS - A5 SP - 9249 EP - 9260 DO - 10.1029/97JA03724 ER -
@article{ author = "Ristić-Đurović, Jasna L. and Bell, TF and Inan, US", year = "1998", abstract = "We use a test particle simulation model based on gyro-averaged equations of motion to study the influence of oblique magnetospherically reflected (MR) whistlers on the near-loss-cone distribution function of radiation belt electrons. We find that MR whistlers originating in lightning can resonantly interact with radiation belt electrons over a broad range of L shells and precipitate higher energy electrons from lower L Shells. Electrons in the energy-range of 1 to 2.6 MeV are precipitated from L = 2, whereas from L = 4 the precipitated electron energy range is 150-220 keV. The precipitated differential electron flux, due to this interaction, is higher for higher L shells, and the maximum value ranges from Phi E-prec(1.11 MeV) 5.2 x 10(-4) electrons cm(-2) s(-1) keV(-1) at L = 2 to Phi E-prec(173 keV) = 4.6 x 10(-1) electrons cm(-2) s(-1) keV(-1) at L = 4. The lifetimes of radiation belt electrons in a given magnetic flux tube around the L shell on which the interaction takes place are found to be of the order of several days, comparable to lifetimes corresponding to electron loss induced by hiss, which was heretofore assumed to be the dominant loss mechanism [Lyons et al., 1972]. The minimum electron lifetimes vary from 2.4 days for 1.11 MeV electrons at L = 2 to 4.6 days for 173 keV electrons at L = 4.", journal = "Journal of Geophysical Research - Space Physics", title = "Precipitation of radiation belt electrons by magnetospherically reflected whistlers", volume = "103", number = "A5", pages = "9249-9260", doi = "10.1029/97JA03724" }
Ristić-Đurović, J. L., Bell, T.,& Inan, U.. (1998). Precipitation of radiation belt electrons by magnetospherically reflected whistlers. in Journal of Geophysical Research - Space Physics, 103(A5), 9249-9260. https://doi.org/10.1029/97JA03724
Ristić-Đurović JL, Bell T, Inan U. Precipitation of radiation belt electrons by magnetospherically reflected whistlers. in Journal of Geophysical Research - Space Physics. 1998;103(A5):9249-9260. doi:10.1029/97JA03724 .
Ristić-Đurović, Jasna L., Bell, TF, Inan, US, "Precipitation of radiation belt electrons by magnetospherically reflected whistlers" in Journal of Geophysical Research - Space Physics, 103, no. A5 (1998):9249-9260, https://doi.org/10.1029/97JA03724 . .