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Can X-Ray Lasers Exist in astrophysical objects?

机译:X射线激光器可以存在于天体物体中吗?

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摘要

We consider the possibility of population inversion in astrophysical objects irradiated by high-intensity blackbody radiation from a nearby source. As a model, we use the 1s2p~1P_1 populations in helium-like ions, which are generated by K-shell photoionization of lithium-like ions. Our conclusion is that the presently known highest astrophysical irradiation conditions are insufficient to produce population inversion for this transition. According to our estimate, population inversion is possible only in the visible or longer wavelength regimes. Our estimates may change for non-black-body radiation distributions.
机译:我们考虑了附近来源的高强度黑体辐射所辐射的天体物理物体发生种群倒置的可能性。作为模型,我们使用类氦离子中的1s2p〜1P_1族,这些族离子是由类锂离子的K壳光电离产生的。我们的结论是,目前已知的最高天体物理辐照条件不足以使这一转变产生种群倒置。根据我们的估计,仅在可见或更长波长范围内,种群反转是可能的。对于非黑体辐射分布,我们的估计可能会发生变化。

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