High-current-density, high brightness cathodes for free electron laser applications

Technical Report · Mon Jun 01 00:00:00 EDT 1987

DOI:https://doi.org/10.2172/6311267· OSTI ID:6311267

Green, M C ^[1]

---

1. Varian Associates, Palo Alto, CA (USA). Palo Alto Microwave Tube Div.

This report discusses the following topics: brightness and emittance of electron beams and cathodes; general requirements for cathodes in high brightness electron guns; candidate cathode types; plasma and field emission cathodes; true field emission cathodes; oxide cathodes; lanthanum hexaborides cathodes; laser driven thermionic cathodes; laser driven photocathodes; impregnated porous tungsten dispenser cathodes; and choice of best performing cathode types.

• Research Organization: Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Varian Associates, Palo Alto, CA (USA). Palo Alto Microwave Tube Div.
• Sponsoring Organization: USDOD
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 6311267
• Report Number(s): UCRL-CR-105111; ON: DE91005195
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
43 PARTICLE ACCELERATORS
45 MILITARY TECHNOLOGY, WEAPONRY, AND NATIONAL DEFENSE
CATHODES
DESIGN
FREE ELECTRON LASERS
BALLISTIC MISSILE DEFENSE
BEAM EMITTANCE
ELECTRON BEAMS
ELECTRON GUNS
FIELD EMISSION
LANTHANUM BORIDES
PHOTOCATHODES
THERMIONIC EMITTERS
BEAMS
BORIDES
BORON COMPOUNDS
ELECTRODES
EMISSION
LANTHANUM COMPOUNDS
LASERS
LEPTON BEAMS
NATIONAL DEFENSE
PARTICLE BEAMS
RARE EARTH COMPOUNDS
426002* - Engineering- Lasers & Masers- (1990-)
430300 - Particle Accelerators- Auxiliaries & Components
450500 - Military Technology
Weaponry
& National Defense- Strategic Defense Initiative- (1990-)