• 论文 •
A small piggy back detector system are used to study the reduction of γ-ray background induced by atmospheric neutrons in the type of active shielded γ-ray spectroscopes.The system consists of two φ1"5 ×1"5 NaI erystal units,one of which is surrounded by some neutron shield material.The results of a balloon flight in 1981 are presented.The data show that a shield of 3 cm thick pure parraffin can not reduce the γ-ray background,on the contrary,it may even cause some enhancement.
Ma Yu-qian. GAMMA-RAY BACKGROUND INDUCED BY ATMOSPHERIC NEUTRONS[J]. , doi: 10.11728/cjss1983.03.237.
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