摘要
介绍了一种新的直接测量重超核寿命的方法.并对其中用到的一个重要探测设备——裂变碎片靶室——在托马斯·杰斐逊国家实验室用^(252)Cf放射源进行了测试.该靶室的单模块时间分辨率为~163ns.在此分辨率的基础上,计算机模拟表明用此方法测到的超核寿命误差将在9.6ps左右.
In this paper a new method to measure the lifetime of heavy hypernuclei is introduced,and the main device used in the measurement-fission fragment chamber(FFC)-is tested by a 252Cf spontaneous source at Thomas Jefferson National Accelerator Facility(JLab).The chamber has a single-module timing resolution of~163ps.Based on the timing resolution tested,our computer simulation predicts that the error of the measured lifetime is about 9.6ps.
出处
《高能物理与核物理》
CSCD
北大核心
2007年第8期755-759,共5页
High Energy Physics and Nuclear Physics
基金
国家自然科学基金(10575046)资助~~