裂变产额法刻度浸于铀溶液中SSTD的效率因子

CALIBRATION OF THE EFFICIENCY FACTOR FOR SSTD IMMERSED IN URANIUM SOLUTION USING FISSION YIELD METHOD

摘要: 本文建立了裂变产额法用以刻度浸于铀溶液中的固体径迹探测器记录裂变碎片的效率因子.这个方法基于测量一些裂变产物核素的强度,并应用文献中准确已知的裂变产额值计算出铀溶液中发生的裂变数。测量的裂变产物为~(91)Sr,~(92)Sr,~(99)Mo.~(13)Te,~(130)Ba。~(140)Ba 6种核素,实验测定了聚碳酸酯记录裂变碎片的效率因子K_(wet)为(8.52±0.0j)×(10~-)_cm。这个值和应用?Cf自发裂变刻度的结果很好地符合.
- 裂变产额 /
- 聚碳酸酯 /
- 径迹密度 /
- 效率因子
Abstract: In the present work fission yield method is developed to calibrate the fission fragment registration efficiency factor of solid state track detector immersed in uranium solution. After measuring the activity of some fission product nuclides and the track density on the track detector, the efficiency factor,Kwe, can be evaluated. It is based on the accuracy of thermal fission yield data of 235U. The fission product nuclides to be measured are 91Sr, 92Sr, "Mo, 132Te, 139Ba and 140Ba. The value of Kwet for polycarbonate is measured to be (8.52+±0.05)× 10-4cm which is in very good agreement with the value calibrated with 252Cf solution.
- Fission yield /
- Polycarbonate /
- Track density /
- Efficiency factor.

[1]	Ramaswami, A.et al.,J.Inorg.Nucl. Chem.,41． 1531(1979) .
[2]	Ramaswami, A.et al.,J.Inorg.Nucl. Chem.,42, 1213(1980) .
[3]	Ramaswami, A.et al.,J.Inorg. Nucl. Chem.,43, 3067(1981) .
[4]	Ramaswami, A.et al.,Rad(?)ochim.Acta, 30, 11(1982) .
[5]	Marathe. S.G.et al.,J.Inorg. Nucl. Chem.,40,1981(1978) .
[6]	Iyer R.H.et al.,Nucl.Instr. Meth.,115,23(1974) .
[7]	郭景儒、黄浩新主编,裂变产物分析,原子能出版社,北京,1985年.
[8]	唐培家、刘大鸣等,低本底γ谱仪效率刻度,中国原子能科学研究院内部资料,1986年.
[9]	张春华,王青等,核技术,10,33(1986) .
[10]	Ihara, H. et al.,JAERI-M 9715(1981) .
[11]	Browne,E.and Firestone,R.B.,Table of Radioactive Isotopes,John Wiley(?) Sons,New York, 1986．
[12]	Cuninghame, J.G.et al., J.Inorg. Nucl.Chem., 36, 1453(1974) .
[13]	王冬梅等.应用~(262) Cf溶液刻度固体径迹探测器记录裂变碎片的效率因子(待发表)。