【作者】 万俊生； 杨永青； 刘书焕； 赵英； 刘喃喃；

【Author】 WAN Jun-sheng,YANG Yong-qing,LIU Shu-huan,ZHAO Ying,LIU Nan-nan(Northwest Institute of Nuclear Technology,P.O.Box 69-16,Xi’an 710024,China)

【机构】 西北核技术研究所；

【摘要】 利用平行电极板裂变电离室测量技术对α射线致空气电离进行实验研究,探讨电极板间距离和放射源测量位置对测量结果的影响。结果表明,当电极板间距离小于两倍α粒子飞行距离时,测量结果随电极板距离的增大而微弱增大,电离室中放射源的位置对测量结果影响不显著。实验测量的α射线产生的离子对与理论计算结果相吻合。更多还原

【Abstract】 The atmosphere ionization induced by α-rays was experimentally studied using fission ionization chamber with two plane electrodes.The influences of distance between the two electrodes and the position of radioactive source in the chamber on the experimental results were explored.The results show that the measured ion-pairs increase slightly with the distance between the two electrodes as the distance shorter than the double length of α-ray flying in the air.The position of radioactive source in the chamber has no remarkable influence on the measurement.The experimental results of ion-pairs induced by α-rays in the air agree well with that from the theoretical calculation.更多还原