[en] This paper discusses the following topics: the GaAs source; semiconductor photocathodes for higher polarization; the helium chemi-ionization source; and electron polarimetry. 29 refs., 2 figs
1989; 19 p; CEBAF-PR--89-002; Available from NTIS, PC A03/MF A01 - OSTI; 1 as DE89010344; Portions of this document are illegible in microfiche products.