TY - GEN
T1 - The origin of helium-3 isotope enhancement in the magnetosphere observed by TSUBASA satellite
AU - Hareyama, M.
AU - Fujii, M.
AU - Hasebe, N.
AU - Kajiwara, N.
AU - Kodaira, S.
AU - Sakurai, K.
AU - Takano, M.
AU - Goka, T.
AU - Koshiishi, H.
AU - Matsumoto, H.
PY - 2006
Y1 - 2006
N2 - The energetic helium isotopes, 3He and 4He, were observed by Heavy Ion Telescope (HIT) onboard the TSUBASA satellite from March, 2002 to September, 2003 in the geostationary transfer orbit. These isotope data in the quiet periods were analyzed to obtain the spatial and temporal variation of fluxes of both isotopes. The enhancement and variation of the 3He/4He ratio in low L-value were found to be large in comparison with that of galactic cosmic rays (GCR), while the ratio in high L-value is almost stable and comparable to GCR one. These results suggest that the injection and loss mechanism of heavy ions differ between inner and outer radiation belts.
AB - The energetic helium isotopes, 3He and 4He, were observed by Heavy Ion Telescope (HIT) onboard the TSUBASA satellite from March, 2002 to September, 2003 in the geostationary transfer orbit. These isotope data in the quiet periods were analyzed to obtain the spatial and temporal variation of fluxes of both isotopes. The enhancement and variation of the 3He/4He ratio in low L-value were found to be large in comparison with that of galactic cosmic rays (GCR), while the ratio in high L-value is almost stable and comparable to GCR one. These results suggest that the injection and loss mechanism of heavy ions differ between inner and outer radiation belts.
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U2 - 10.1142/9789812773678_0150
DO - 10.1142/9789812773678_0150
M3 - Conference contribution
AN - SCOPUS:84885799404
SN - 9812567984
SN - 9789812567987
T3 - Astroparticle, Particle and Space Physics, Detectors and Medical Physics Applications - Proceedings of the 9th Conference
SP - 940
EP - 944
BT - Astroparticle, Particle and Space Physics, Detectors and Medical Physics Applications - Proceedings of the 9th Conference
PB - World Scientific Publishing Co. Pte Ltd
T2 - International Conference on Advanced Technology and Particle Physics, ICATPP 2005
Y2 - 17 October 2005 through 21 October 2005
ER -