Proposal for a nuclear gamma-ray laser of optical range.
Proposal for a nuclear gamma-ray laser of optical range.
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关于光学范围的核伽马射线激光器的提案。
DOI：
10.1103/physrevlett.106.162501
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发表时间：
2010
影响因子：
8.6
通讯作者：
E. Tkalya
中科院分区：
文献类型：
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作者：
E. Tkalya
理论上证明了主体介电晶体中(229m)Th异构核集合的受激γ发射放大7.6 eV γ辐射的可能性。这种放大是由于(1)激光辐射激发大量(229m)Th异构体，(2)由于钍核与晶体电场或外部磁场的相互作用，在冷却的样品中产生核能级的逆布居，(3)晶体中钍核在无反冲的情况下发射或吸收光学光子，以及(4)通过金属覆盖物的传导电子产生核自旋弛豫。
A possibility of the amplification of the 7.6 eV γ radiation by the stimulated γ emission of the ensemble of the (229m)Th isomeric nuclei in a host dielectric crystal is proved theoretically. This amplification is a result of (1) the excitation of a large number of (229m)Th isomers by laser radiation, (2) the creation of the inverse population of nuclear levels in a cooled sample owing to the interaction of thorium nuclei with the crystal electric field or with an external magnetic field, (3) the emission or absorption of the optical photons by thorium nuclei in the crystal without recoil, and (4) the nuclear spin relaxation through the conduction electrons of the metallic covering.