Bulletin of the American Physical Society
APS March Meeting 2022
Volume 67, Number 3
Monday–Friday, March 14–18, 2022; Chicago
Session G00: Poster Session I (2pm- 5pm CST)
2:00 PM,
Tuesday, March 15, 2022
Room: McCormick Place Exhibit Hall F1
Abstract: G00.00162 : Study of Au and graphite thin films by MeV ultrafast electron diffraction for use as a beam diagnostic tool*
Presenter:
Mariana A Fazio
(University of New Mexico)
Authors:
Mariana A Fazio
(University of New Mexico)
Salvador Sosa Guitron
(University of New Mexico)
Destry Monk
(University of New Mexico)
Junjie Li
(Brookhaven National Laboratory)
Marcus Babzien
(Brookhaven National Laboratory)
Mikhail Fedurin
(Brookhaven National Laboratory)
Hisato Yamaguchi
(Los Alamos National Laboratory)
Nathan A Moody
(Los Alamos National Laboratory)
Mark A Palmer
(Brookhaven National Laboratory)
Sandra G Biedron
(University of New Mexico)
In this work, we studied Au and graphite films with MUED for different pump-probe delay times and laser fluences in single shot mode. Au samples are standards with known lattice constants, hence enabling the indirect characterization of the electron beam. Graphite films were also employed and structure dynamics were investigated as a function of the number of layers. This thorough study will enable the use of these materials as a diagnostic tool for MUED and possibly other applications. The instrument will be extended to hold a second sample chamber to obtain concurrent diffraction patterns of either Au or graphite and the material system of interest. This will allow to perform shot-to-shot pattern normalization to improve the accuracy of MUED.
*Supported by DOE's EPSCoR award DE-SC0021365, used resources of DOE user facility Accelerator Test Facility at BNL.
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