Electron impact excitation of laser-excited rubidium atoms

Journal Article · Sat May 01 04:00:00 EDT 1993 · Bulletin of the American Physical Society

OSTI ID:281273

Wei, Z; Flynn, C; Stumpf, B

A rubidium beam is intersected at right angles by a cylindrical electron beam and a counterpropagating, circularly polarized diode-laser beam, tuned to the F{sup {prime}} = 3 {r_arrow} F = 4 hyperfine transition of the 5{sup 2}S{sub 1/2} resonance line (780 nm) of {sup 85}Rb. Optical pumping creates {sup 85}Rb 5{sup 2}P atoms in a pure spin and angular momentum state {vert_bar}F=4, M{sub F}=4{r_angle} = {vert_bar}J=3/2, M{sub J}=3/2{r_angle}={vert_bar}M{sub L}=1, M{sub S}=1/2{r_angle}. Electrons of a few eV energy collide with these laser-excited rubidium atoms and excite them further to an upper state n{sup {prime}}L{sup {prime}}J{sup {prime}} from which they decay back to the 5{sup 2}P state. This n{sup {prime}}L{sup {prime}}J{sup {prime}}{r_arrow}5{sup 2}P fluorescence is detected to determine the 5{sup 2}P{sub 3/2,3/2}{r_arrow}6{sup 2}D{sub 3/2,5/2} excitation will be presented.

• OSTI ID: 281273
• Report Number(s): CONF-9305421--; CNN: Grant RII-8902065
• Journal Information: Bulletin of the American Physical Society, Journal Name: Bulletin of the American Physical Society Journal Issue: 3 Vol. 38; ISSN 0003-0503; ISSN BAPSA6
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
CROSS SECTIONS
ELECTRON-ATOM COLLISIONS
EXCITATION
HYPERFINE STRUCTURE
LASER RADIATION
RUBIDIUM