-
Abstract:
When a Λ hyperon is embedded in a nucleus it can form a hypernucleus. The lifetime and its mass dependence of stable hypernuclei provide information about the ΛN interaction in the nuclear medium. This work will introduce the Jefferson Lab experiment (E02-017), which aims to study the lifetime of the heavy hypernuclei using a specially developed fission fragment detection technique: a multi-wire proportional chamber operating under low gas pressure (LPMWPC). The trajectory of the detected fragment is reconstructed and used to find the fission point on the target foil, the position resolution is less than 1 mm, which meets the original design, the separation of target materials and events mixture percentage in different regions are verified by Monte Carlo simulation.
-
-
References
[1]
|
Danysza M, Pniewski J. Phil. Mag., 1953, 44: 348[2] Park H, Bhang H, Youn M et al. Phys. Rev. C, 2000, 61: 054004[3] Ohm H, Hermes T, Borgs W, Koch H R et al. Phys. Rev. C, 1997, 55: 3062-3065[4] Cassing W, Jarczyk L, Kamys B, Kulessa P et al. Eur. Phys. J. A, 2003, 16: 549-561[5] Kulessa P, Rudy Z, Hartmann M, Pysz K et al. Physics Letters B, 1998, 427: 403-408[6] Assamagan K, Baker K et al. Nucl. Instrum. Methods A, 1999, 426: 405-419[7] SONG Yu-Shou et al. HEP NP, 2007, 31(08): 755-759 (in Chinese)[8] Grove R et al. Nucl. Instrum. Methods, 1970, 89: 257-759[9] Radeka V, IEEE Trans. Nucl. Sci., 1974, NS-21(1): 51-70 |
-
[1] |
HUANG Jiang
, XIONG Yong-Qian
, CHEN De-Zhi
, LIU Kai-Feng
, YANG Jun
, LI Dong
, YU Tiao-Qin
, FAN Ming-Wu
, YANG Bo
. A permanent magnet electron beam spread system used fora low energy electron irradiation accelerator. Chinese Physics C,
2014, 38(10): 107008.
doi: 10.1088/1674-1137/38/10/107008
|
[2] |
ZHOU Yong-Zhao
, LIANG Hao
, XUE Jun-Dong
, CHEN Yi-Xin
, YANG Tao
, GONG Da-Tao
, JIN Ge
, YU Xiao-Qi
. An Online Program for Monitoring KLOE Experiment. Chinese Physics C,
2002, 26(6): 620-625. |
[3] |
WU Zhong-Li
. ANALYSIS OF THE MOMENTUM DISTRIBUTION WIDTH OF THE PREOJECTILE-LIKE-FRAGMENT FROM HEAVY ION COLLISIONS. Chinese Physics C,
1989, 13(8): 752-754. |
[4] |
Dai Guangxi
, Li Weisheng
. Exploration of Optimum Shape in Symmetric Fission. Chinese Physics C,
1988, 12(S4): 399-404. |
-
Access
-
-