Annihilation of Antiprotons in Light Nuclei  

作　　者：M. A. Rana E. U. Khan M. I. Shahzad I. E. Qureshi F. Malik G. Sher S. Manzoor H. A. Khan 

机构地区：[1]Physics Research Division, PINSTECH, P. O. Nilore, Islamabad, Pakistan

出　　处：《Chinese Physics Letters》2006年第7期1716-1718,共3页中国物理快报（英文版）

摘　　要：CR-39 detectors have been exposed to a 5.9-MeV antiproton beam using the low energy antiproton ring （LEAR） facility at CERN. At this energy, tracks of antiprotons appear in a CR-39 detector after 135 rain of etching in 6M NaOH at 70℃. Fluence of the antiproton beam has been determined using track density. We have also found tracks in the etched CR-39 detector at different depths （250-500μm）. These tracks have resulted from the annihilation of antiprotons with the constituents （H, C and O） of the CR-39 detector. The goal of the experiment is to develop a simple and low-cost method to study properties of antiparticles and those formed after annihilation of these particles with the target matter.CR-39 detectors have been exposed to a 5.9-MeV antiproton beam using the low energy antiproton ring （LEAR） facility at CERN. At this energy, tracks of antiprotons appear in a CR-39 detector after 135 rain of etching in 6M NaOH at 70℃. Fluence of the antiproton beam has been determined using track density. We have also found tracks in the etched CR-39 detector at different depths （250-500μm）. These tracks have resulted from the annihilation of antiprotons with the constituents （H, C and O） of the CR-39 detector. The goal of the experiment is to develop a simple and low-cost method to study properties of antiparticles and those formed after annihilation of these particles with the target matter.

关 键 词：STOPPED ANTIPROTONS HEAVY-NUCLEI GEV/C 

分 类 号：O572.3[理学—粒子物理与原子核物理]