Transient nuclear inversion by x-ray free electron laser in a tapered x-ray waveguide

The enhancement of x-ray-matter interaction by guiding and focusing radiation from x-ray free electron lasers is investigated theoretically. We show that elliptical waveguides using a cladding material with a high atomic number, such as platinum, can maintain an x-ray intensity of up to three orders...

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Main Authors: Yu-Hsueh Chen, Po-Han Lin, Guan-Ying Wang, Adriana Pálffy, Wen-Te Liao
Format: Article
Language:English
Published: American Physical Society 2022-07-01
Series:Physical Review Research
Online Access:http://doi.org/10.1103/PhysRevResearch.4.L032007
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author Yu-Hsueh Chen
Po-Han Lin
Guan-Ying Wang
Adriana Pálffy
Wen-Te Liao
author_facet Yu-Hsueh Chen
Po-Han Lin
Guan-Ying Wang
Adriana Pálffy
Wen-Te Liao
author_sort Yu-Hsueh Chen
collection DOAJ
description The enhancement of x-ray-matter interaction by guiding and focusing radiation from x-ray free electron lasers is investigated theoretically. We show that elliptical waveguides using a cladding material with a high atomic number, such as platinum, can maintain an x-ray intensity of up to three orders of magnitude larger than in free space. This feature can be used to place a nuclear sample in the waveguide focal area and drive nuclear Mössbauer transitions up to transient nuclear population inversion. The latter is a long-standing goal related to gamma-ray lasers or nuclear state population control for energy storage. We show that inverted nuclei numbers of up to approximately 2×10^{5} are achievable in the realistic region of longitudinal x-ray-free-electron-laser coherence time ≤10 fs. Our results anticipate the important role of tapered x-ray waveguides and strategically embedded samples in the field of x-ray quantum optics.
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spelling doaj.art-c442a5e073f34901b3c362d90466c27b2024-04-12T17:22:35ZengAmerican Physical SocietyPhysical Review Research2643-15642022-07-0143L03200710.1103/PhysRevResearch.4.L032007Transient nuclear inversion by x-ray free electron laser in a tapered x-ray waveguideYu-Hsueh ChenPo-Han LinGuan-Ying WangAdriana PálffyWen-Te LiaoThe enhancement of x-ray-matter interaction by guiding and focusing radiation from x-ray free electron lasers is investigated theoretically. We show that elliptical waveguides using a cladding material with a high atomic number, such as platinum, can maintain an x-ray intensity of up to three orders of magnitude larger than in free space. This feature can be used to place a nuclear sample in the waveguide focal area and drive nuclear Mössbauer transitions up to transient nuclear population inversion. The latter is a long-standing goal related to gamma-ray lasers or nuclear state population control for energy storage. We show that inverted nuclei numbers of up to approximately 2×10^{5} are achievable in the realistic region of longitudinal x-ray-free-electron-laser coherence time ≤10 fs. Our results anticipate the important role of tapered x-ray waveguides and strategically embedded samples in the field of x-ray quantum optics.http://doi.org/10.1103/PhysRevResearch.4.L032007
spellingShingle Yu-Hsueh Chen
Po-Han Lin
Guan-Ying Wang
Adriana Pálffy
Wen-Te Liao
Transient nuclear inversion by x-ray free electron laser in a tapered x-ray waveguide
Physical Review Research
title Transient nuclear inversion by x-ray free electron laser in a tapered x-ray waveguide
title_full Transient nuclear inversion by x-ray free electron laser in a tapered x-ray waveguide
title_fullStr Transient nuclear inversion by x-ray free electron laser in a tapered x-ray waveguide
title_full_unstemmed Transient nuclear inversion by x-ray free electron laser in a tapered x-ray waveguide
title_short Transient nuclear inversion by x-ray free electron laser in a tapered x-ray waveguide
title_sort transient nuclear inversion by x ray free electron laser in a tapered x ray waveguide
url http://doi.org/10.1103/PhysRevResearch.4.L032007
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AT guanyingwang transientnuclearinversionbyxrayfreeelectronlaserinataperedxraywaveguide
AT adrianapalffy transientnuclearinversionbyxrayfreeelectronlaserinataperedxraywaveguide
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