کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1885516 | 1043424 | 2008 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Production of ternary events in 4He+U, Bi and Au reactions at 8.8Â GeV
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
تشعشع
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Events with three fragments with Z⩾8 in the interactions of 8.8 GeV 4He with U, Bi and Au nuclei are examined using the Makrofol polycarbonate track detector. The sandwich technique is used to enable a direct observation of the multiply charged fragment emission by a single nucleus. Fragments produced in these events are identified and an event-by-event model-free analysis is performed in order to separate different production mechanisms. A classification scheme based on the multiplicity of intermediate-mass fragments 8⩽Z⩽20 is used in order to identify events belonging to the different reaction channels. In the interactions of 4He with U, about 70% of ternary events are registered with the multiplicity of intermediate-mass fragments MIMFobs=0,1, while in the interactions of 4He with Au, about 60% of ternary events are registered with MIMFobs=2,3. The analysis shows that these two groups of ternary events are produced by different reaction mechanisms. The cross-sections and experimental features are determined for the various reaction mechanisms, and their variation with the target mass has been investigated.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Radiation Measurements - Volume 43, Supplement 1, August 2008, Pages S179-S183
Journal: Radiation Measurements - Volume 43, Supplement 1, August 2008, Pages S179-S183
نویسندگان
Ž. TodoroviÄ, S. SavoviÄ, A. Djordjevich,