用聚变反应产生的氦-4确定地下核试验的热核爆炸当量是一种可靠的测量方法。从爆室空腔中回收瞬发气体样品。为测量聚变产生的氦-4总量,必须对空气稀释样品中的氦-4和周围岩石释放的放射成因氦-4总量加以修正。对于空气稀释的影响,在试后的样品中用氖和氩来修正。在岩石孔隙内试前的空气 The use of helium-4 produced by fusion reactions to determine the thermal nuclear equivalent of underground nuclear tests is a reliable measure. Instantaneous gas samples are recovered from the chamber of the blast chamber. In order to measure the total amount of helium-4 produced by the fusion, the total amount of helium-4, a radiogenic factor released by the helium-4 in the air-diluted sample and the surrounding rock, must be corrected. For air dilution, use neon and argon to correct in the post-test sample. Pre-test air in rock pores