Creating intense polarized electron beam via laser stripping and spin-orbit interaction
The recent advance in laser field make it possible to excite and strip electrons with definite spin from hydrogen atoms. The sources of hydrogen atoms with orders of magnitude higher currents (than that of the conventional polarized electron cathods) can be obtained from H{sup -} sources with good monochromatization. With one electron of H{sup -} stripped by a laser, the remained electron is excited to upper state (2P{sup 3/2} and 2P{sup 1/2}) by a circular polarization laser light from FEL. Then, it is excited to a high quantum number (n=7) with mostly one spin direction due to energy level split of the states with a definite direction of spin and angular momentum in an applied magnetic field and then it is stripped by a strong electric field of an RF cavity. This paper presents combination of lasers and fields to get high polarization and high current electron source.
- Research Organization:
- Brookhaven National Lab. (BNL), Upton, NY (United States)
- Sponsoring Organization:
- DOE - Office Of Science
- DOE Contract Number:
- DE-AC02-98CH10886
- OSTI ID:
- 1013524
- Report Number(s):
- BNL-94483-2010-IR; R&D Project: KBCH139; 18054; KB0202011; TRN: US1102680
- Country of Publication:
- United States
- Language:
- English
Similar Records
Parity violation in hydrogen revisited.
Investigations of Beam Dynamics Issues at Current and Future Hadron Accelerators (Final Report)