Remember a neutron has a certain lifetime from the time it's born to the time it gets captured and you can measure that in distance as well.
记住，一个中子有一定的生存期，从它产生的时间，到它被捕获的时间，你就能够在远处测量它。
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This paper deals with the mechanism of bypass channel and mainly discusses the theory, technics and interpretation method of using neutronLifetime Log(NLL)to evaluate channeling.