Theoretical Studies on the New System of Neutron Flux Measurement in the Nuclear Reactor

WAN Jun-Sheng; PAN Xiao-Bing; ZHAO Zhu-Min; CHEN Li-Xin; JING Chun-Yuan; WANG Dao-Hua

Chinese Physics C> 2002, Vol. 26> Issue(10) : 1027-1035

Theoretical Studies on the New System of Neutron Flux Measurement in the Nuclear Reactor

Northwest Institute of Nuclear Technology, Xi'an 710024, China

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Abstract：
The neutron measurement system based on the Nuclear Pumped Laser (NPL) techniques was explored in this work utilizing the relationship between the neutron flux and the NPL laser power. Following the studies on the mechanism of the NPL, the laser intrinsic efficiency and the energy deposition efficiency in the laser cell of this system were theoretically studied in detail. A laser pumping mechanism was proposed. The variation of sensitivity with working time and the response function on neutron flux was discussed. The feasibility of this neutron measurement system was demonstrated theoretically.

References

[1]

Olumura A, Gmamotu S et al. Nucl. Inat.Meth .，1991.A306:5302 WAN Jun-Sheng. JING Chun-Yuan, JIANG Fei-Jun et al. laser and Optronics Pmgress, 20(11，9: 4(in Chinese)(万俊牛，景春元，蒋飞军等，激光与光电子学进展,2001,9:43 FANG Jun-Sheng. CHFN Li-Xin, ZHAO Zhu-Ming et al. A Optimized Design of Rectangle Pumping Nuclear Reactor Pumped Laser. Pros of 2001 Workshop on Utilization of Research Reactors, Nov. 5-9, 2001，Beijing, China, p1-54 Lamb W E . Phys . Rev .，1964. A134:14295 WAN Jun-Sheng. DING Chun-Yuan, CHEN Da et al. High Power laser and Particle Beams. 2001。13(6):701 (in Chinese)(万俊生，景春元.陈达等.强激光与拉子束，2001,13(6):701)6 WAN Jun-Sheng, DING Chun-Yuan, CHEN Da et al. High Power Laser and Particle Besms, 2001，13(4):413-417 (in Chi-nese)(万俊生，景春元，陈达等,强激光与粒子束,2001,13(4):413-417)7 Hebner G A, Hays C N. J.Appl. Phys，1993, 74:3673

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WAN Jun-Sheng, PAN Xiao-Bing, ZHAO Zhu-Min, CHEN Li-Xin, JING Chun-Yuan and WANG Dao-Hua. Theoretical Studies on the New System of Neutron Flux Measurement in the Nuclear Reactor[J]. Chinese Physics C, 2002, 26(10): 1027-1035.

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Received: 2001-11-23
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

Theoretical Studies on the New System of Neutron Flux Measurement in the Nuclear Reactor

Corresponding author: WAN Jun-Sheng,

Northwest Institute of Nuclear Technology, Xi'an 710024, China

Received Date: 2001-11-23
Accepted Date: 1900-01-01
Available Online: 2002-10-05

Abstract: The neutron measurement system based on the Nuclear Pumped Laser (NPL) techniques was explored in this work utilizing the relationship between the neutron flux and the NPL laser power. Following the studies on the mechanism of the NPL, the laser intrinsic efficiency and the energy deposition efficiency in the laser cell of this system were theoretically studied in detail. A laser pumping mechanism was proposed. The variation of sensitivity with working time and the response function on neutron flux was discussed. The feasibility of this neutron measurement system was demonstrated theoretically.