Efficient picosecond x-ray pulse generation from plasmas in the radiation dominated regime
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 andlarge laser facilities.
- Authors:
- Publication Date:
- Research Org.:
- Colorado State Univ., Fort Collins, CO (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC)
- OSTI Identifier:
- 1405043
- Alternate Identifier(s):
- OSTI ID: 1502461
- Grant/Contract Number:
- SC0014610
- Resource Type:
- Published Article
- Journal Name:
- Optica
- Additional Journal Information:
- Journal Name: Optica Journal Volume: 4 Journal Issue: 11; Journal ID: ISSN 2334-2536
- Publisher:
- Optical Society of America
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 70 PLASMA PHYSICS AND FUSION TECHNOLOGY
Citation Formats
Hollinger, Reed, Bargsten, Clayton, Shlyaptsev, Vyacheslav N., Kaymak, Vural, Pukhov, Alexander, Capeluto, Maria Gabriela, Wang, Shoujun, Rockwood, Alex, Wang, Yong, Townsend, Amanda, Prieto, Amy, Stockton, Patrick, Curtis, Alden, and Rocca, Jorge J. Efficient picosecond x-ray pulse generation from plasmas in the radiation dominated regime. United States: N. p., 2017.
Web. doi:10.1364/OPTICA.4.001344.
Hollinger, Reed, Bargsten, Clayton, Shlyaptsev, Vyacheslav N., Kaymak, Vural, Pukhov, Alexander, Capeluto, Maria Gabriela, Wang, Shoujun, Rockwood, Alex, Wang, Yong, Townsend, Amanda, Prieto, Amy, Stockton, Patrick, Curtis, Alden, & Rocca, Jorge J. Efficient picosecond x-ray pulse generation from plasmas in the radiation dominated regime. United States. https://doi.org/10.1364/OPTICA.4.001344
Hollinger, Reed, Bargsten, Clayton, Shlyaptsev, Vyacheslav N., Kaymak, Vural, Pukhov, Alexander, Capeluto, Maria Gabriela, Wang, Shoujun, Rockwood, Alex, Wang, Yong, Townsend, Amanda, Prieto, Amy, Stockton, Patrick, Curtis, Alden, and Rocca, Jorge J. Fri .
"Efficient picosecond x-ray pulse generation from plasmas in the radiation dominated regime". United States. https://doi.org/10.1364/OPTICA.4.001344.
@article{osti_1405043,
title = {Efficient picosecond x-ray pulse generation from plasmas in the radiation dominated regime},
author = {Hollinger, Reed and Bargsten, Clayton and Shlyaptsev, Vyacheslav N. and Kaymak, Vural and Pukhov, Alexander and Capeluto, Maria Gabriela and Wang, Shoujun and Rockwood, Alex and Wang, Yong and Townsend, Amanda and Prieto, Amy and Stockton, Patrick and Curtis, Alden and Rocca, Jorge J.},
abstractNote = {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 andlarge laser facilities.},
doi = {10.1364/OPTICA.4.001344},
journal = {Optica},
number = 11,
volume = 4,
place = {United States},
year = {Fri Oct 27 00:00:00 EDT 2017},
month = {Fri Oct 27 00:00:00 EDT 2017}
}
https://doi.org/10.1364/OPTICA.4.001344
Web of Science
Figures / Tables:
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Figures / Tables found in this record: