کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1885297 | 1043402 | 2010 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Neutron, photon and proton energy spectra at high altitude measured using a phoswich-type neutron detector
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
تشعشع
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Neutron energy spectrum from 7 to 180Â MeV, photon energy spectrum from 4 to 50Â MeV and proton energy spectrum from 94 to 145Â MeV were measured simultaneously using a phoswich-type neutron detector with particle discrimination methods at atmospheric depth of 249Â g/cm2, a vertical cut-off rigidity of 10.2Â GV and at a heliocentric potential of 312Â MV. We compared our results with other measured and calculated particle energy spectra. Our measured results give a large, sharp neutron peak around 70Â MeV, although Bonner balls show a broad peak around 100Â MeV due to low energy resolution. The measured photon and proton spectra are between the calculated energy spectra. This onboard study provides the first experimental neutron energy spectrum over 10Â MeV with a high-energy resolution.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Radiation Measurements - Volume 45, Issue 10, December 2010, Pages 1297-1300
Journal: Radiation Measurements - Volume 45, Issue 10, December 2010, Pages 1297-1300
نویسندگان
M. Takada, K. Yajima, H. Yasuda, T. Sato, T. Nakamura,