Re: [問題] 統計熱力學兩題
※ 引述《libra1005 (PTT鄉民)》之銘言：
: 最近在看統計熱力學，作者是JOHN F. LEE FRANCIS W. SEARS
: 看到第五章量子力學部分，課文看完，但是作後面的習題有些還是不太會作，
: 因此想請問板上高手幫忙解惑一下，我的問題點是不太了題目最後要求的是甚麼？
: 感激不盡。
: 問題一.
: It is observed that light emitted from a vibrating hydrogen molecule has
: a wavelength of 2.270*10^-6m .Assuming that this radiation comes from
: transitions between adjacent excited states of a one-dimensional harmonic
: oscillator (with △E = hc/λ,where λ is the wavelength of the observed
: radiation),what is the value of the equivalent spring constant for a hydrogen
: molecule?
△E = hc/λ=hν=(h/2π)*(k/μ)^1/2
k應該為所求
: 問題二.
: It is observed that light emitted from a rotating oxygen molecule must come
: from adjacent rotational states,i.e.△j=1. Determine the frequencies of the
: four lowest transitions if I=1.94*10^39gm cm^2.
E(J) = 2*(h^2)*J(J+1) = BJ(J+1) 單位是焦耳
---------------
8I*(π^2)
所求應為 J=1 --> J=0 2B
J=2 --> J=1 4B
J=3 --> J=2 6B
J=4 --> J=3 8B
不知道對不對
有錯請大家指正 @@
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※ 編輯: BNQ5566 來自: 140.113.224.209 (12/30 12:26)
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