抄録
The Balloon-borne Experiment with a Superconducting Spectrometer, BESS, aims to study elementary particle/antiparticle phenomena in the early history of the Universe. The instrument has a unique feature of a thin superconducting solenoid magnet enabling a large geometrical acceptance with a horizontally cylindrical configuration. Seven balloon flights have been successfully carried out since 1993. More then 10 3 comic-ray antiproton have been unambiguously detected, and the energy spectrum has been measured with the characteristic peak at 2 GeV. The search for cosmic-ray antihelium brought the upper-limit of the antihelium/helium ratio down to < 10 -6 . To extend the highly sensitive measurements, we are planning polar long duration flights in Antarctica focusing on the very low energy antiproton spectrum towards the solar-minimum in the next decade.
本文言語 | English |
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ページ(範囲) | 1253-1262 |
ページ数 | 10 |
ジャーナル | Advances in Space Research |
巻 | 30 |
号 | 5 |
DOI | |
出版ステータス | Published - 2002 |
外部発表 | はい |
ASJC Scopus subject areas
- 航空宇宙工学
- 天文学と天体物理学
- 地球物理学
- 大気科学
- 宇宙惑星科学
- 地球惑星科学(全般)