US 11,915,837 B2
Electron diffraction intensity from single crystal silicon in a photoinjector
William Graves, Tempe, AZ (US); and Lucas Malin, Tempe, AZ (US)
Assigned to Arizona Board of Regents on Behalf of Arizona State University, Scottsdale, AZ (US)
Filed by Arizona Board of Regents on Behalf Of Arizona State University, Scottsdale, AZ (US)
Filed on Jul. 16, 2021, as Appl. No. 17/378,094.
Application 17/378,094 is a continuation of application No. PCT/US2020/014188, filed on Jan. 17, 2020.
Claims priority of provisional application 62/794,467, filed on Jan. 18, 2019.
Claims priority of provisional application 62/794,468, filed on Jan. 18, 2019.
Prior Publication US 2021/0341399 A1, Nov. 4, 2021
Int. Cl. G21K 1/06 (2006.01); H01S 4/00 (2006.01); H05G 2/00 (2006.01); G01N 23/20008 (2018.01)
CPC G21K 1/062 (2013.01) [G01N 23/20008 (2013.01); H01S 4/00 (2013.01); H05G 2/008 (2013.01); G01N 2223/0565 (2013.01); G01N 2223/102 (2013.01); G21K 2201/061 (2013.01); G21K 2201/067 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A method, comprising:
simulating diffraction in a transmission geometry of relativistic electron bunches from a crystallographic structure of a crystal, thereby simulating diffraction of the relativistic electron bunches into a plurality of Bragg peaks;
selecting, based on the simulated diffraction of the relativistic electron bunches from the crystallographic structure, a range of angles between a direction of propagation of the relativistic electron bunches and a normal direction of crystal, wherein the range of angles is selected to include an angle at which a diffraction portion into a respective Bragg peak of the plurality of Bragg peaks is maximized;
sequentially accelerating a plurality of physical electron bunches to relativistic energies, wherein the plurality of physical electron bunches are accelerated toward a physical crystal having the crystallographic structure;
diffracting the plurality of physical electron bunches off the physical crystal at different angles within the range of angles;
measuring the diffraction portion into the respective Bragg peak at the different angles within the range of angles;
selecting a final angle based on the measured diffraction portion into the respective Bragg peak at the different angles within the range of angles;
generating a pulse of light, including:
accelerating a subsequent physical electron bunch to a relativistic energy;
diffracting the subsequent physical electron bunch off the physical crystal at final angle; and
generating the pulse of light using the diffracted subsequent physical electron bunch.