Choice of Gauge in Two-Photon Transitions: 1s-2s Transition in Atomic Hydrogen
Choice of Gauge in Two-Photon Transitions: 1s-2s Transition in Atomic Hydrogen
复制标题
双光子跃迁中规范的选择：原子氢中的 1s-2s 跃迁
DOI：
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发表时间：
1977
期刊：
影响因子：
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通讯作者：
A. Quattropani
中科院分区：
文献类型：
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作者：
F. Bassani;J. Forney;A. Quattropani
用$stackrel{ensuremath{
ightarrow}}{mathrm{E}}ifmmodecdotelse extperiodcenteredfi{}stackrel{ensuremath{
ightarrow}}{mathrm{x}}$和$stackrel{ensuremath{
ightarrow}}{mathrm{A}}ifmmodecdotelse extperiodcenteredfi{}stackrel{ensuremath{
ightarrow}}{mathrm{p}}$相互作用计算氢的双光子过渡速率，包括连续谱。我们发现$stackrel{ensuremath{
ightarrow}}{mathrm{E}}ifmmodecdotelse extperiodcenteredfi{}stackrel{ensuremath{
ightarrow}}{mathrm{x}}$交互接近具有少量中间状态的最终结果，因此是在任何近似计算中使用的。给出了双光子吸收系数随频率变化的数值，显示了共振增强。
The two-photon transition rate for hydrogen is evaluated with the $stackrel{ensuremath{
ightarrow}}{mathrm{E}}ifmmodecdotelse extperiodcenteredfi{}stackrel{ensuremath{
ightarrow}}{mathrm{x}}$ and the $stackrel{ensuremath{
ightarrow}}{mathrm{A}}ifmmodecdotelse extperiodcenteredfi{}stackrel{ensuremath{
ightarrow}}{mathrm{p}}$ interactions including the continuum. We find that the $stackrel{ensuremath{
ightarrow}}{mathrm{E}}ifmmodecdotelse extperiodcenteredfi{}stackrel{ensuremath{
ightarrow}}{mathrm{x}}$ interaction approaches the final result with a small number of intermediate states and consequently is the one to be used in any approximate calculation. Numerical values of the two-photon absorption coefficient as a function of frequency are given and the resonance enhancement is exhibited.