A compact electron gun for time-resolved electron diffraction

TY - JOUR

T1 - A compact electron gun for time-resolved electron diffraction

AU - Robinson, Matthew S.

AU - Lane, Paul D.

AU - Wann, Derek A.

N1 - This is an author-produced version of the published paper. Uploaded in accordance with the publisher’s self-archiving policy. Further copying may not be permitted; contact the publisher for details

PY - 2015/1

Y1 - 2015/1

N2 - A novel compact time-resolved electron diffractometer has been built with the primary goal of studying the ultrafast molecular dynamics of photoexcited gas-phase molecules. Here, we discuss the design of the electron gun, which is triggered by a Ti:Sapphire laser, before detailing a series of calibration experiments relating to the electron-beam properties. As a further test of the apparatus, initial diffraction patterns have been collected for thin, polycrystalline platinum samples, which have been shown to match theoretical patterns. The data collected demonstrate the focusing effects of the magnetic lens on the electron beam, and how this relates to the spatial resolution of the diffraction pattern.

AB - A novel compact time-resolved electron diffractometer has been built with the primary goal of studying the ultrafast molecular dynamics of photoexcited gas-phase molecules. Here, we discuss the design of the electron gun, which is triggered by a Ti:Sapphire laser, before detailing a series of calibration experiments relating to the electron-beam properties. As a further test of the apparatus, initial diffraction patterns have been collected for thin, polycrystalline platinum samples, which have been shown to match theoretical patterns. The data collected demonstrate the focusing effects of the magnetic lens on the electron beam, and how this relates to the spatial resolution of the diffraction pattern.

UR - http://www.scopus.com/inward/record.url?scp=84923799445&partnerID=8YFLogxK

U2 - 10.1063/1.4905335

DO - 10.1063/1.4905335

M3 - Article

C2 - 25638074

SN - 0034-6748

VL - 86

JO - Review of Scientific Instruments

JF - Review of Scientific Instruments

IS - 1

M1 - 013109

ER -