Intrinsic electron beam emittance from metal photocathodes: the effect of the electron effective mass.
A theoretical development of prior analyses, together with our solenoid scan measurements on eight planar metal photocathodes (Ag, Be, Cr, Cu, Mo, Sn, Ta, and W) and previous data on Mg [X. J. Wang, M. Babzien, R. Malone, and Z. Wu, in Proceedings of LINAC2002, Gyeongju, Korea, 2002 (Pohang Accelerator Laboratory, Pohang, Korea, 2002), pp. 142-144.] indicate that the transverse momentum (and hence intrinsic emittance) of an electron beam is fundamentally dependent on the electron effective mass in the metal.
Department of Physics, University of Illinois at Chicago, 845 W. Taylor Street, Chicago, Illinois 60607-7059, USA.
B L
BL
Rickman
Department of Physics, University of Illinois at Chicago, 845 W. Taylor Street, Chicago, Illinois 60607-7059, USA.
Joel A
JA
Berger
Research Resources Center, University of Illinois at Chicago, 845 W. Taylor Street, Chicago, Illinois 60607-7059, USA.
A W
AW
Nicholls
Department of Physics, University of Illinois at Chicago, 845 W. Taylor Street, Chicago, Illinois 60607-7059, USA.
W Andreas
WA
Schroeder