ABSOLUTE CROSS-SECTIONS FOR THE C-12(PI+/-,PI-N)C-11 REACTIONS BETWEEN 40 AND 600 MEV

被引:60
作者
DROPESKY, BJ
BUTLER, GW
ORTH, CJ
WILLIAMS, RA
YATESWILLIAMS, MA
FRIEDLANDER, G
KAUFMAN, SB
机构
[1] BROOKHAVEN NATL LAB, DEPT CHEM, UPTON, NY 11973 USA
[2] OAK RIDGE NATL LAB, DIV CHEM, OAK RIDGE, TN 37830 USA
来源
PHYSICAL REVIEW C | 1979年 / 20卷 / 05期
关键词
D O I
10.1103/PhysRevC.20.1844
中图分类号
O57 [原子核物理学、高能物理学];
学科分类号
070202 ;
摘要
The excitation functions for the C12(π±,πN)C11 reactions have been established for 40- to 600-MeV π- and 50- to 520-MeV π+. These excitation functions are dominated by the (3,3) pion-nucleon resonance but show an upward energy shift in the resonance peak for π- (to about 190 MeV) and a downward shift for π+ (to about 160 MeV). The σ(π-)σ(π+) ratio at 180 MeV is 1.59±0.07. The results are compared with theoretical calculations based on a semiclassical transport model including nucleon charge exchange and an intranuclear cascade model. NUCLEAR REACTIONS C12(π±,πN)C11, excitation functions, Eπ+=50-520 MeV, Eπ-=40-600 MeV. Plastic scintillator targets, measured C11 by β+-γ coincidences. Compared with semiclassical transport and intranuclear cascade calculations. © 1979 The American Physical Society.
引用
收藏
页码:1844 / 1856
页数:13
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