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arXiv 1003.5098nucl-th
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强短脉冲Laser诱导的光核反应

Photonuclear Reactions induced by Intense Short Laser Pulses

B. Dietz, H. A. Weidenmueller

摘要:

对能量为E(0)的强短激光脉冲激发的原子核的时间衰减的测量产生了相关散射矩阵的自相关函数的傅里叶变换。我们确定的最佳长度(在时间上)的脉冲和评估的时间衰减函数,使用随机矩阵理论。该函数显示包含其他方法无法获得的信息。我们以一种对数据分析有用的方式来近似该函数。对于低于第一中子通道的阈值能量E(n)的E(0),时间衰减函数在时间t上是指数的,而对于E(0)> E(n),时间衰减函数是指数与t上的幂的乘积。在这两个能量域的测量衰减函数的比较产生一个明确的和新颖的测试核中的随机矩阵理论。

英文摘要:

A measurement of the decay in time of nuclei excited by an intense short laser pulse of energy E(0) yields the Fourier transform of the autocorrelation function of the associated scattering matrix. We determine the optimal length (in time) of the pulse and evaluate the time-decay function using random-matrix theory. That function is shown to contain information not otherwise available. We approximate that function in a manner that is useful for the analysis of data. For E(0) below the threshold energy E(n) of the first neutron channel, the time-decay function is exponential in time t while it is the product of an exponential and a power in t for E(0) > E(n). The comparison of the measured decay functions in both energy domains yields an unambiguous and novel test of random-matrix theory in nuclei.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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