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Amplified X-Ray Emission from Core-Ionized Diatomic Molecules
2013 (English)In: Physical Review Letters, ISSN 0031-9007, E-ISSN 1079-7114, Vol. 110, no 4Article in journal (Refereed) Published
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Abstract [en]

We predict high-gain x-ray lasing in molecular nitrogen by ultrafast core ionization with an x-ray free-electron laser source. To estimate the spectral and temporal output of this molecular x-ray laser, we solve generalized Maxwell-Bloch equations, keeping track of the electronic and nuclear degrees of freedom. The spectrum of the amplified x-ray emission shows a strong dependence on the gain-length product. Whereas the emission at small gain length is similar to the relatively broad x-ray fluorescence band, the spectrum is determined by a single frequency in the linear gain region. The vibrational wave packet dynamics during the x-ray emission process is examined. By preparation of the initial vibrational quantum state, the x-ray emission frequency can be tuned within the fluorescence band. The present scheme is applicable to other homo- and heteronuclear diatomic systems, thereby extending the spectral range of coherent x-ray radiation sources based on amplification on bound transitions.

Place, publisher, year, edition, pages
American Physical Society , 2013. Vol. 110, no 4
National Category
Atom and Molecular Physics and Optics
Identifiers
URN: urn:nbn:se:kth:diva-182305DOI: 10.1103/PhysRevLett.110.043901ISI: 000313951300009Scopus ID: 2-s2.0-84872690271OAI: oai:DiVA.org:kth-182305DiVA: diva2:971546
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QC 20160928

Available from: 2016-09-16 Created: 2016-02-18 Last updated: 2016-09-28Bibliographically approved

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Kimberg, Victor
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