Abstract:
The efficient conversion of optical laser light into bright ultrafast x-ray pulses in laser created plasmas is of high interest for dense plasma physics studies, material science, and other fields. However, the rapid hydrodynamic expansion that cools hot plasmas has limited the x-ray conversion efficiency (CE) to 1% or less. Here we demonstrate more than one order of magnitude increase in picosecond x-ray CE by tailoring near solid density plasmas to achieve a large radiative to hydrodynamic energy loss rate ratio, leading into a radiation loss dominated plasma regime. A record 20% CE into hν > 1 keV photons was measured in arrays of large aspect ratio Au nanowires heated to keV temperatures with ultrahigh contrast femtosecond laser pulses of relativistic intensity. The potential of these bright ultrafast x-ray point sources for table-top imaging is illustrated with single shot flash radiographs obtained using low laser pulse energy. These results will enable the deployment of brighter laser driven x-ray sources at both compact and large laser facilities. © 2017 Optical Society of America.
Registro:
Documento: |
Artículo
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Título: | Efficient picosecond x-ray pulse generation from plasmas in the radiation dominated regime |
Autor: | Hollinger, R.; Bargsten, C.; Shlyaptsev, V.N.; Kaymak, V.; Pukhov, A.; Capeluto, M.G.; Wang, S.; Rockwood, A.; Wang, Y.; Townsend, A.; Prieto, A.; Stockton, P.; Curtis, A.; Rocca, J.J. |
Filiación: | Electrical and Computer Engineering Department, Colorado State University, Fort Collins, CO 80523, United States Physics Department, Colorado State University, Fort Collins, CO 80523, United States Chemistry Department, Colorado State University, Fort Collins, CO 80523, United States Institut für Theoretische Physik 1, Heinrich-Heine-Universität Düsseldorf, Düsseldorf, 40225, Germany Departamento de Física, FCEyN, UBA and IFIBA, CONICET, Ciudad Universitaria, Pabellón 1, Buenos Aires, 1428, Argentina
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Palabras clave: | Extreme ultraviolet (EUV); Nanomaterials; Plasmas; Soft x-rays; Ultrafast lasers; X-ray imaging; X-rays; Aspect ratio; Energy dissipation; Extreme ultraviolet lithography; Fluid dynamics; Hydrodynamics; Laser pulses; Nanostructured materials; Plasma (human); Ultrafast lasers; Ultrashort pulses; X rays; Extreme ultraviolets; Hydrodynamic expansion; Laser-created plasma; Relativistic intensity; Soft X-ray; Solid density plasmas; X-ray conversion efficiency; Xray imaging; Plasma diagnostics |
Año: | 2017
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Volumen: | 4
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Número: | 11
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Página de inicio: | 1344
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Página de fin: | 1349
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DOI: |
http://dx.doi.org/10.1364/OPTICA.4.001344 |
Título revista: | Optica
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Título revista abreviado: | Optica
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ISSN: | 23342536
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Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_23342536_v4_n11_p1344_Hollinger |
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Citas:
---------- APA ----------
Hollinger, R., Bargsten, C., Shlyaptsev, V.N., Kaymak, V., Pukhov, A., Capeluto, M.G., Wang, S.,..., Rocca, J.J.
(2017)
. Efficient picosecond x-ray pulse generation from plasmas in the radiation dominated regime. Optica, 4(11), 1344-1349.
http://dx.doi.org/10.1364/OPTICA.4.001344---------- CHICAGO ----------
Hollinger, R., Bargsten, C., Shlyaptsev, V.N., Kaymak, V., Pukhov, A., Capeluto, M.G., et al.
"Efficient picosecond x-ray pulse generation from plasmas in the radiation dominated regime"
. Optica 4, no. 11
(2017) : 1344-1349.
http://dx.doi.org/10.1364/OPTICA.4.001344---------- MLA ----------
Hollinger, R., Bargsten, C., Shlyaptsev, V.N., Kaymak, V., Pukhov, A., Capeluto, M.G., et al.
"Efficient picosecond x-ray pulse generation from plasmas in the radiation dominated regime"
. Optica, vol. 4, no. 11, 2017, pp. 1344-1349.
http://dx.doi.org/10.1364/OPTICA.4.001344---------- VANCOUVER ----------
Hollinger, R., Bargsten, C., Shlyaptsev, V.N., Kaymak, V., Pukhov, A., Capeluto, M.G., et al. Efficient picosecond x-ray pulse generation from plasmas in the radiation dominated regime. Optica. 2017;4(11):1344-1349.
http://dx.doi.org/10.1364/OPTICA.4.001344