Direct Measurement of the Attenuation Length of Extensive Air Showers
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- Sasaki Hiroshi
- Department of Physics, Faculty of Science, Osaka City University
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The direct measurement of the attenuation length for an individual EAS through 200 g/cm2 water has been made at Mt. Norikura (2770 m a.s.l.) from 1964 to 1968. The mean value of the observed attenuation length (120±20 g/cm2) in the interval of the size (106>N≥105) is less than the values which were estimated from the absorption length of the counting rate of EAS.<BR>The attenuation length observed was sensitive to the age parameter and there was a difference between the age parameter estimated from the lateral structure (Slateral) and that from the attenuation of EAS (Slongitudinal) as expressed by the following formula;<BR>Slongitudinal=Slateral+(0.5∼0.8).<BR>The mutual dependence among various parameters (attenuation length, age parameter, size and core structure) led to the following results; (i) Large inelasticity of about 0.7 at E=1014 eV, (ii) The frequent large transverse momentum interactions and (iii) The change of the nuclear interaction mechanism at 1014 eV.
収録刊行物
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- Ｊｏｕｒｎａｌ ｏｆ ｔｈｅ Ｐｈｙｓｉｃａｌ Ｓｏｃｉｅｔｙ ｏｆ Ｊａｐａｎ
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Ｊｏｕｒｎａｌ ｏｆ ｔｈｅ Ｐｈｙｓｉｃａｌ Ｓｏｃｉｅｔｙ ｏｆ Ｊａｐａｎ 31 (1), 1-11, 1971
一般社団法人 日本物理学会
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詳細情報 詳細情報について
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- CRID
- 1390282679172096768
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- NII論文ID
- 110001958318
- 210000082505
- 130003735191
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- NII書誌ID
- AA00704814
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- BIBCODE
- 1971JPSJ...31....1S
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- ISSN
- 13474073
- 00319015
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- NDL書誌ID
- 8502862
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可
