Helium isotopes in the radiation belts obtained by hit onboard TSUBASA

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

doi:10.1142/S0217751X05029812

Helium isotopes in the radiation belts obtained by hit onboard TSUBASA

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

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

Abstract

The helium isotopes were observed by Heavy Ion Telescope (HIT) onboard the TSUBASA satellite from March, 2002 to September, 2003 in the geostationary transfer orbit. The mass resolution of the HIT instrument is ∼ 0.25 amu in energy range 20÷43 MeV/nucleon for helium isotopes. Helium data in the quiet periods were analyzed to obtain the spatial and temporal variation of fluxes of helium isotopes, ³He and ⁴He. From this analysis, the enhancement of ³He flux as compared with ⁴He one in low L-value was found. Both of the helium fluxes strongly fluctuated in their L-distributions in each period.

Original language	English
Pages (from-to)	6687-6689
Number of pages	3
Journal	International Journal of Modern Physics A
Volume	20
Issue number	29
DOIs	https://doi.org/10.1142/S0217751X05029812
Publication status	Published - 2005 Nov 20

Keywords

Energetic particle
Helium isotope
Radiation belts

ASJC Scopus subject areas

Physics and Astronomy(all)
Mathematical Physics
Nuclear and High Energy Physics

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10.1142/S0217751X05029812

Cite this

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title = "Helium isotopes in the radiation belts obtained by hit onboard TSUBASA",

abstract = "The helium isotopes were observed by Heavy Ion Telescope (HIT) onboard the TSUBASA satellite from March, 2002 to September, 2003 in the geostationary transfer orbit. The mass resolution of the HIT instrument is ∼ 0.25 amu in energy range 20÷43 MeV/nucleon for helium isotopes. Helium data in the quiet periods were analyzed to obtain the spatial and temporal variation of fluxes of helium isotopes, 3He and 4He. From this analysis, the enhancement of 3He flux as compared with 4He one in low L-value was found. Both of the helium fluxes strongly fluctuated in their L-distributions in each period.",

keywords = "Energetic particle, Helium isotope, Radiation belts",

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

year = "2005",

month = nov,

day = "20",

doi = "10.1142/S0217751X05029812",

language = "English",

volume = "20",

pages = "6687--6689",

journal = "International Journal of Modern Physics A",

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publisher = "World Scientific Publishing Co. Pte Ltd",

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TY - JOUR

T1 - Helium isotopes in the radiation belts obtained by hit onboard TSUBASA

AU - Hareyama, M.

AU - Asaeda, M.

AU - Fujii, M.

AU - Hasebe, Nobuyuki

AU - Kajiwara, N.

AU - Kobayashi, M. N.

AU - Kodaira, S.

AU - Sakurai, K.

AU - Goka, T.

AU - Koshiishi, H.

AU - Matsumoto, H.

PY - 2005/11/20

Y1 - 2005/11/20

N2 - The helium isotopes were observed by Heavy Ion Telescope (HIT) onboard the TSUBASA satellite from March, 2002 to September, 2003 in the geostationary transfer orbit. The mass resolution of the HIT instrument is ∼ 0.25 amu in energy range 20÷43 MeV/nucleon for helium isotopes. Helium data in the quiet periods were analyzed to obtain the spatial and temporal variation of fluxes of helium isotopes, 3He and 4He. From this analysis, the enhancement of 3He flux as compared with 4He one in low L-value was found. Both of the helium fluxes strongly fluctuated in their L-distributions in each period.

AB - The helium isotopes were observed by Heavy Ion Telescope (HIT) onboard the TSUBASA satellite from March, 2002 to September, 2003 in the geostationary transfer orbit. The mass resolution of the HIT instrument is ∼ 0.25 amu in energy range 20÷43 MeV/nucleon for helium isotopes. Helium data in the quiet periods were analyzed to obtain the spatial and temporal variation of fluxes of helium isotopes, 3He and 4He. From this analysis, the enhancement of 3He flux as compared with 4He one in low L-value was found. Both of the helium fluxes strongly fluctuated in their L-distributions in each period.

KW - Energetic particle

KW - Helium isotope

KW - Radiation belts

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DO - 10.1142/S0217751X05029812

M3 - Article

AN - SCOPUS:29844449072

SN - 0217-751X

VL - 20

SP - 6687

EP - 6689

JO - International Journal of Modern Physics A

JF - International Journal of Modern Physics A

IS - 29

ER -

Helium isotopes in the radiation belts obtained by hit onboard TSUBASA

Abstract

Keywords

ASJC Scopus subject areas

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