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shiwen5006

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[求助] 请教一名词decay length

谁能告诉我dacay length是什么概念?能否具体的给举例说明下?不剩感激~~  
PS:在读文献的时候,讲到材料的微观结构讲道:decay length of the hydrophilic domain, 不懂指的是什么。
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pkonly

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shiwen5006(金币+1): 2011-10-12 09:03:13
wgs8136(金币+1): 欢迎交流 2011-10-12 09:07:06
In nonrelativistic situations, if a particle has a velocity v = βc, and a 1/e decay lifetime τ (e.g., 2.2 microseconds for muon), then the distance the particle will travel before decaying is βcτ.

For relativistic particles, we need to add time dilation, so the 1/e decay length becomes βγcτ
2楼2011-10-12 08:55:02
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shiwen5006

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2楼: Originally posted by pkonly at 2011-10-12 08:55:02:
In nonrelativistic situations, if a particle has a velocity v = βc, and a 1/e decay lifetime τ (e.g., 2.2 microseconds for muon), then the distance the particle will travel before decaying is βc ...

这个我在百度上看到了,不过还是谢谢~~
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3楼2011-10-12 09:03:03
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cGroup

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shiwen5006(金币+2): 2011-10-12 10:08:52
这个地方decay length 指的是“特征长度”
4楼2011-10-12 09:46:32
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