Abstract
Energetic heavy ions with 20∼200 MeV/nucleon in the radiation belts have been observed by Heavy Ion Telescope (HIT) onboard TSUBASA satellite. The data observed during quiet periods in the outer region of radiation belt indicate that the relative abundance for major elements are similar to that of primary nuclei in galactic cosmic rays obtained by ACE/CRIS experiment, in particular for the ratio of 22Ne/20Ne, while the absolute intensities there were less than that obtained by ACE/CRIS. On the other hand, in the inner region of radiation belt near the earth, both energetic 3He and 4He isotopes were enhanced, in particular for 3He, however, no energetic heavy ions except for energetic nuclei as Li-B, N and Ar were observed. Thus the charge and mass composition of heavy ions is essential to our consideration of possible sources and behavior of energetic heavy ions trapped in the radiation belt.
| Original language | English |
|---|---|
| Title of host publication | Proceedings of the 30th International Cosmic Ray Conference, ICRC 2007 |
| Publisher | Universidad Nacional Autonoma de Mexico |
| Pages | 647-650 |
| Number of pages | 4 |
| Volume | 1 |
| Edition | SH |
| Publication status | Published - 2007 |
| Event | 30th International Cosmic Ray Conference, ICRC 2007 - Merida, Yucatan, Mexico Duration: 2007 Jul 3 → 2007 Jul 11 |
Other
| Other | 30th International Cosmic Ray Conference, ICRC 2007 |
|---|---|
| Country | Mexico |
| City | Merida, Yucatan |
| Period | 07/7/3 → 07/7/11 |
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ASJC Scopus subject areas
- Nuclear and High Energy Physics
Cite this
Charge and mass composition of heavy ions in the earth's radiation belt. / Hareyama, Makoto; Hasebe, Nobuyuki; Kodaira, Satoshi; Masuyama, Naoki; Ota, Shuya; Sakurai, Kunitomo; Goka, Tateo; Koshiishi, Hideki; Matsumoto, Haruhisa.
Proceedings of the 30th International Cosmic Ray Conference, ICRC 2007. Vol. 1 SH. ed. Universidad Nacional Autonoma de Mexico, 2007. p. 647-650.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Charge and mass composition of heavy ions in the earth's radiation belt
AU - Hareyama, Makoto
AU - Hasebe, Nobuyuki
AU - Kodaira, Satoshi
AU - Masuyama, Naoki
AU - Ota, Shuya
AU - Sakurai, Kunitomo
AU - Goka, Tateo
AU - Koshiishi, Hideki
AU - Matsumoto, Haruhisa
PY - 2007
Y1 - 2007
N2 - Energetic heavy ions with 20∼200 MeV/nucleon in the radiation belts have been observed by Heavy Ion Telescope (HIT) onboard TSUBASA satellite. The data observed during quiet periods in the outer region of radiation belt indicate that the relative abundance for major elements are similar to that of primary nuclei in galactic cosmic rays obtained by ACE/CRIS experiment, in particular for the ratio of 22Ne/20Ne, while the absolute intensities there were less than that obtained by ACE/CRIS. On the other hand, in the inner region of radiation belt near the earth, both energetic 3He and 4He isotopes were enhanced, in particular for 3He, however, no energetic heavy ions except for energetic nuclei as Li-B, N and Ar were observed. Thus the charge and mass composition of heavy ions is essential to our consideration of possible sources and behavior of energetic heavy ions trapped in the radiation belt.
AB - Energetic heavy ions with 20∼200 MeV/nucleon in the radiation belts have been observed by Heavy Ion Telescope (HIT) onboard TSUBASA satellite. The data observed during quiet periods in the outer region of radiation belt indicate that the relative abundance for major elements are similar to that of primary nuclei in galactic cosmic rays obtained by ACE/CRIS experiment, in particular for the ratio of 22Ne/20Ne, while the absolute intensities there were less than that obtained by ACE/CRIS. On the other hand, in the inner region of radiation belt near the earth, both energetic 3He and 4He isotopes were enhanced, in particular for 3He, however, no energetic heavy ions except for energetic nuclei as Li-B, N and Ar were observed. Thus the charge and mass composition of heavy ions is essential to our consideration of possible sources and behavior of energetic heavy ions trapped in the radiation belt.
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M3 - Conference contribution
VL - 1
SP - 647
EP - 650
BT - Proceedings of the 30th International Cosmic Ray Conference, ICRC 2007
PB - Universidad Nacional Autonoma de Mexico
ER -