He and Ne isotopes in radiation belts observed by HIT onboard TSUBASA Satellite

M. Hareyama; M. Asaeda; M. Fujii; Nobuyuki Hasebe; N. Kajiwara; S. Kodaira; K. Sakurai; T. Goka; H. Koshiishi; H. Matsumoto

He and Ne isotopes in radiation belts observed by HIT onboard TSUBASA Satellite

M. Hareyama, M. Asaeda, M. Fujii, Nobuyuki Hasebe, N. Kajiwara, S. Kodaira, K. Sakurai, T. Goka, H. Koshiishi, H. Matsumoto

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

2 Citations (Scopus)

Abstract

The energetic heavy ions from helium to iron were observed by Heavy Ion Telescope (HIT) onboard the TSUBASA satellite from March, 2002 to September, 2003 in the geostationary transfer orbit. Their isotopes were also separated that the mass resolution is ∼0.24 amu for helium isotopes and ∼0.35 amu for neon isotopes. ³He and ⁴He for helium with 20 - 40 MeV/n and ²⁰ Ne and ²² Ne for neon with 50 - 100 MeV/n in the quiet periods were analyzed to obtain the spatial and temporal variation of fluxes of both isotopes. The enhancement of ³ He flux as compared with ⁴ He one in the region than 2L was found, while no neon isotopes were observed in the same region. Moreover, the ratios of ³He/ ⁴He and ²² Ne/ ²⁰ Ne in the region than 3 L are comparable to those of galactic cosmic rays. These results might suggest that the injection and loss mechanism of heavy ions differ between inner and outer radiation belts.

Original language	English
Title of host publication	29th International Cosmic Ray Conference, ICRC 2005
Publisher	Tata Institute of Fundamental Research
Pages	121-124
Number of pages	4
Volume	2
Publication status	Published - 2005
Event	29th International Cosmic Ray Conference, ICRC 2005 - Pune Duration: 2005 Aug 3 → 2005 Aug 10

Other

Other	29th International Cosmic Ray Conference, ICRC 2005
City	Pune
Period	05/8/3 → 05/8/10

ASJC Scopus subject areas

Nuclear and High Energy Physics

Cite this

Hareyama, M, Asaeda, M, Fujii, M, Hasebe, N, Kajiwara, N, Kodaira, S, Sakurai, K, Goka, T, Koshiishi, H & Matsumoto, H 2005, He and Ne isotopes in radiation belts observed by HIT onboard TSUBASA Satellite. in 29th International Cosmic Ray Conference, ICRC 2005. vol. 2, Tata Institute of Fundamental Research, pp. 121-124, 29th International Cosmic Ray Conference, ICRC 2005, Pune, 05/8/3.

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title = "He and Ne isotopes in radiation belts observed by HIT onboard TSUBASA Satellite",

abstract = "The energetic heavy ions from helium to iron were observed by Heavy Ion Telescope (HIT) onboard the TSUBASA satellite from March, 2002 to September, 2003 in the geostationary transfer orbit. Their isotopes were also separated that the mass resolution is ∼0.24 amu for helium isotopes and ∼0.35 amu for neon isotopes. 3He and 4He for helium with 20 - 40 MeV/n and 20 Ne and 22 Ne for neon with 50 - 100 MeV/n in the quiet periods were analyzed to obtain the spatial and temporal variation of fluxes of both isotopes. The enhancement of 3 He flux as compared with 4 He one in the region than 2L was found, while no neon isotopes were observed in the same region. Moreover, the ratios of 3He/ 4He and 22 Ne/ 20 Ne in the region than 3 L are comparable to those of galactic cosmic rays. These results might suggest that the injection and loss mechanism of heavy ions differ between inner and outer radiation belts.",

author = "M. Hareyama and M. Asaeda and M. Fujii and Nobuyuki Hasebe and N. Kajiwara and S. Kodaira and K. Sakurai and T. Goka and H. Koshiishi and H. Matsumoto",

year = "2005",

language = "English",

volume = "2",

pages = "121--124",

booktitle = "29th International Cosmic Ray Conference, ICRC 2005",

publisher = "Tata Institute of Fundamental Research",

note = "29th International Cosmic Ray Conference, ICRC 2005 ; Conference date: 03-08-2005 Through 10-08-2005",

}

TY - GEN

T1 - He and Ne isotopes in radiation belts observed by HIT onboard TSUBASA Satellite

AU - Hareyama, M.

AU - Asaeda, M.

AU - Fujii, M.

AU - Hasebe, Nobuyuki

AU - Kajiwara, N.

AU - Kodaira, S.

AU - Sakurai, K.

AU - Goka, T.

AU - Koshiishi, H.

AU - Matsumoto, H.

PY - 2005

Y1 - 2005

N2 - The energetic heavy ions from helium to iron were observed by Heavy Ion Telescope (HIT) onboard the TSUBASA satellite from March, 2002 to September, 2003 in the geostationary transfer orbit. Their isotopes were also separated that the mass resolution is ∼0.24 amu for helium isotopes and ∼0.35 amu for neon isotopes. 3He and 4He for helium with 20 - 40 MeV/n and 20 Ne and 22 Ne for neon with 50 - 100 MeV/n in the quiet periods were analyzed to obtain the spatial and temporal variation of fluxes of both isotopes. The enhancement of 3 He flux as compared with 4 He one in the region than 2L was found, while no neon isotopes were observed in the same region. Moreover, the ratios of 3He/ 4He and 22 Ne/ 20 Ne in the region than 3 L are comparable to those of galactic cosmic rays. These results might suggest that the injection and loss mechanism of heavy ions differ between inner and outer radiation belts.

AB - The energetic heavy ions from helium to iron were observed by Heavy Ion Telescope (HIT) onboard the TSUBASA satellite from March, 2002 to September, 2003 in the geostationary transfer orbit. Their isotopes were also separated that the mass resolution is ∼0.24 amu for helium isotopes and ∼0.35 amu for neon isotopes. 3He and 4He for helium with 20 - 40 MeV/n and 20 Ne and 22 Ne for neon with 50 - 100 MeV/n in the quiet periods were analyzed to obtain the spatial and temporal variation of fluxes of both isotopes. The enhancement of 3 He flux as compared with 4 He one in the region than 2L was found, while no neon isotopes were observed in the same region. Moreover, the ratios of 3He/ 4He and 22 Ne/ 20 Ne in the region than 3 L are comparable to those of galactic cosmic rays. These results might suggest that the injection and loss mechanism of heavy ions differ between inner and outer radiation belts.

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M3 - Conference contribution

AN - SCOPUS:84898950521

VL - 2

SP - 121

EP - 124

BT - 29th International Cosmic Ray Conference, ICRC 2005

PB - Tata Institute of Fundamental Research

T2 - 29th International Cosmic Ray Conference, ICRC 2005

Y2 - 3 August 2005 through 10 August 2005

ER -

He and Ne isotopes in radiation belts observed by HIT onboard TSUBASA Satellite

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