Can X-Ray Lasers Exist in Astrophysical Objects ?

Publications of the Astronomical Society of Japan

Salzmann, David¹  Takabe, Hideaki¹ 

[1] Institute for Laser Engineering, Osaka University, 2-6 Yamadaoka, Suita, Osaka 565-0871

关键词: "atomic physics";    photoionization;    "X-rays: binaries";   

DOI  :  10.1093/pasj/63.4.727

学科分类：天文学(综合)

来源: Oxford University Press

【 摘 要 】

Weconsiderthepossibilityofpopulationinversioninastrophysicalobjectsirradiatedbyhigh-intensityblack-bodyradiationfromanearbysource.Asamodel,weusethe1s2p$$^{1}$$P$$_{1}$$populationsinhelium-likeions,whicharegeneratedbyK-shellphotoionizationoflithium-likeions.Ourconclusionisthatthepresentlyknownhighestastrophysicalirradiationconditionsareinsufficienttoproducepopulationinversionforthistransition.Accordingtoourestimate,populationinversionispossibleonlyinthevisibleorlongerwavelengthregimes.Ourestimatesmaychangefornon-black-bodyradiationdistributions.

【 授权许可】

Unknown