Zobrazeno 1 - 10
of 12
pro vyhledávání: '"Joseph M. Shaw"'
Autor:
Yen-Yu Chang, Xiantao Cheng, Andrea Hannasch, Maxwell LaBerge, Joseph M. Shaw, Kathleen Weichman, James Welch, Aaron C. Bernstein, Watson Henderson, Rafal Zgadzaj, Michael C. Downer
We visualize plasma bubbles driven by 0.67 PW laser pulses in plasma of density $n_e \approx 5\times10^{17}$ ${\rm cm}^{-3}$ by imaging Faraday rotation patterns imprinted on linearly-polarized probe pulses of wavelength $\lambda_{pr} = 1.05 \mu$m an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::651b9ca95edf0a513b10bb2802b1d313
Autor:
Xuejing Jiao, Bjorn Hegelich, Joseph M. Shaw, Hai-En Tsai, Lance A. Labun, Xiaoming Wang, Toma Toncian, Ishay Pomerantz, T. Wang, P. Poth, Michael C. Downer
Publikováno v:
Matter and Radiation at Extremes, Vol 2, Iss 6, Pp 296-302 (2017)
Relativistic electron beams driven by laser wakefield acceleration were utilized to produce ultrashort neutron sources. The experiment was carried out on the 38 fs, ∼0.5 J, 800 nm Ti:Sapphire laser in the 10 TW UT3 laser lab at University of Texas
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4324aa41249fd64bae68f44462be2fc5
https://doaj.org/article/52734e1b7e94450491155b8fed8efb6c
https://doaj.org/article/52734e1b7e94450491155b8fed8efb6c
Autor:
Lance Labun, Aaron C Bernstein, Michael C. Downer, Joseph M. Shaw, Luc Lisi, A. Hannasch, Ganesh Tiwari, Bjorn Hegelich
Publikováno v:
2018 IEEE Advanced Accelerator Concepts Workshop (AAC).
We present experimental results of a method that measures high flux, MeV scale x-rays produced via Thomson backscatter (TBS) of an intense laser pulse (a o ≈ 1) interacting with a counter-propagating Laser wakefield acceleration (LWFA) electron bun
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4d61245c02fc677672924b0ad715b523
https://doi.org/10.1109/aac.2018.8659398
https://doi.org/10.1109/aac.2018.8659398
Generation of tens-of-MeV photons by Compton backscatter from laser-plasma-accelerated GeV electrons
Autor:
Joseph M. Shaw, Hai-En Tsai, Todd Ditmire, A. Hannasch, James Welch, M. LaBerge, N. Fazel, Aaron C Bernstein, M. Spinks, Y. Y. Chang, Toma Toncian, Rafal Zgadzaj, W. Henderson, Michael E Donovan, J. Gordon, C. Wagner, Xiaoming Wang, Gilliss Dyer, Kathleen Weichman, Michael C. Downer, Erhard Gaul, M. I. Martínez
Publikováno v:
Shaw, J M, Bernstein, A C, Hannasch, A, Laberge, M, Chang, Y Y, Weichman, K, Welch, J, Zgadzaj, R, Henderson, W, Tsai, H E, Fazel, N, Wang, X, Wagner, C, Donovan, M, Dyer, G, Gaul, E, Gordon, J, Martinez, M, Spinks, M, Toncian, T, Ditmire, T & Downer, M C 2017, Generation of tens-of-MeV photons by Compton backscatter from laser-plasma-accelerated GeV electrons . in Advanced Accelerator Concepts : 17th Advanced Accelerator Concepts Workshop, AAC 2016 . vol. 1812, 100012, American Institute of Physics Inc., 17th Advanced Accelerator Concepts Workshop, AAC 2016, National Harbor, United States, 31/07/2016 . https://doi.org/10.1063/1.4975910
Advanced Accelerator Concepts: 17th Advanced Accelerator Concepts Workshop, AAC 2016, 1812
Advanced Accelerator Concepts: 17th Advanced Accelerator Concepts Workshop, AAC 2016, 1812
Previous work has demonstrated the use of a plasma mirror (PM), after a laser-plasma accelerator (LPA), for generating Compton γ-rays by retro-reflecting the spent laser pulse into the just-accelerated electrons. Here, we investigate the use of a PM
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::885ca7b72cf56d910f878fe4de225ec9
https://research.vumc.nl/en/publications/6adc55b4-6e65-4b10-a044-cbe9c3a01a8f
https://research.vumc.nl/en/publications/6adc55b4-6e65-4b10-a044-cbe9c3a01a8f
Autor:
W. Henderson, Kathleen Weichman, Gilliss Dyer, C. Wagner, Mikael Martinez, Aaron C Bernstein, Joseph M. Shaw, Toma Toncian, Rafal Zgadzaj, Todd Ditmire, Michael C. Downer, Erhard Gaul, M. LaBerge, M. Spinks, A. Hannasch, Y. Y. Chang, James Welch, J. Gordon, Michael E Donovan
Publikováno v:
Chang, Y Y, Shaw, J M, Welch, J, Weichman, K, Hannasch, A, LaBerge, M, Henderson, W, Zgadzaj, R, Bernstein, A, Wagner, C, Gordon, J, Martinez, M, Spinks, M, Toncian, T, Dyer, G, Gaul, E, Donovan, M, Ditmire, T & Downer, M C 2017, Faraday rotation probe of laser-plasma bubble structures in petawatt-driven wakes . in CLEO : QELS_Fundamental Science, CLEO_QELS 2017 . vol. Part F42-CLEO_QELS 2017, OSA-The Optical Society, CLEO: QELS_Fundamental Science, CLEO_QELS 2017, San Jose, United States, 14/05/2017 . https://doi.org/10.1364/CLEO_QELS.2017.FM2D.5
CLEO: QELS_Fundamental Science, CLEO_QELS 2017, Part F42-CLEO_QELS 2017
CLEO: QELS_Fundamental Science, CLEO_QELS 2017, Part F42-CLEO_QELS 2017
We exploited the Faraday effect to imprint polarization shifts on a transverse probe that captured the structure of a GeV laser-plasma accelerator. Our measurements suggested a plasma bubble diameter ≈ 50.8±10.1 μm.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::65aee36347419f8709219f5c95748aac
https://doi.org/10.1364/cleo_qels.2017.fm2d.5
https://doi.org/10.1364/cleo_qels.2017.fm2d.5
Autor:
M. LaBerge, W. Henderson, James Welch, Michael W Downer, Joseph M. Shaw, Kathleen Weichman, Yen-Yu Chang, Rafal Zgadzaj, A. Hannasch, Aaron C Bernstein
Publikováno v:
AIP Conference Proceedings.
We have experimentally demonstrated ultrafast diagnostics to visualize the laser wakefield acceleration process in a single-shot mode. We measured the Faraday rotation of a probe pulse due to the magnetic field induced by GeV electrons in low-density
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::eaf0da796bf9b88a1980cf15f2fb10ff
https://doi.org/10.1063/1.4975894
https://doi.org/10.1063/1.4975894
Autor:
Alexey Arefiev, David Stark, Rafal Zgadzaj, Michael C. Downer, Xiaoming Wang, Joseph M. Shaw, Hai-En Tsai
Publikováno v:
Physics of Plasmas, vol 24, iss 1
Tsai, HE; Arefiev, AV; Shaw, JM; Stark, DJ; Wang, X; Zgadzaj, R; et al.(2017). Self-aligning concave relativistic plasma mirror with adjustable focus. Physics of Plasmas, 24(1). doi: 10.1063/1.4973432. UC San Diego: Retrieved from: http://www.escholarship.org/uc/item/9t03t8p6
Tsai, HE; Arefiev, AV; Shaw, JM; Stark, DJ; Wang, X; Zgadzaj, R; et al.(2017). Self-aligning concave relativistic plasma mirror with adjustable focus. Physics of Plasmas, 24(1). doi: 10.1063/1.4973432. UC San Diego: Retrieved from: http://www.escholarship.org/uc/item/9t03t8p6
We report an experimental-computational study of the optical properties of plasma mirrors (PMs) at the incident laser frequency when irradiated directly at relativistic intensity (1e18 < I_0 < 1e19 W/cm^2) by near-normally incident (4 degree), high-c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::53f1c8312c2aafb94c6154ea0329757f
Autor:
Alexey Arefiev, W. Henderson, Xiaoming Wang, V. Khudik, Joseph M. Shaw, Rafal Zgadzaj, Hai-En Tsai, Xi Zhang, Michael C. Downer, Zhengyan Li, Gennady Shvets
Publikováno v:
AIP Conference Proceedings.
We demonstrate the first tunable Compton backscatter (CBS) x-ray source based on the combination of a laser wakefield accelerator (LWFA) and a plasma mirror (PM). A thin plastic film near the gas jet exit efficiently retro-reflects the LWFA driving p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::db89f6c8f84fd17acfb7c5f396e620ee
https://doi.org/10.1063/1.4965663
https://doi.org/10.1063/1.4965663
Publikováno v:
Applied optics. 26(4)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d9ac2275bc6e6700d9a80d7a8f747f6b
https://pubmed.ncbi.nlm.nih.gov/20454182
https://pubmed.ncbi.nlm.nih.gov/20454182
Autor:
Joseph M. Shaw
Publikováno v:
Dialog. 4:32-39
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0eef35981a721ec5616e5a36cc5b3ac1
https://doi.org/10.1111/j.1540-6385.1965.tb00250.x
https://doi.org/10.1111/j.1540-6385.1965.tb00250.x