High speed diagnostic study of pulsed, cold cathode, gyrotrons

K. Ronald

doi:10.1117/12.2298663

30 August 1993 High speed diagnostic study of pulsed, cold cathode, gyrotrons

K. Ronald

Proceedings Volume 2104, 18th International Conference on Infrared and Millimeter Waves; 21046F (1993) https://doi.org/10.1117/12.2298663
Event: 18th International Conference on Infrared and Millimeter Waves, 1993, Colchester, United Kingdom

Abstract

Results are reported of plasma formation in the diode of a pulsed cold-cathode gyrotron. Streakphotography has been used to provide direct evidence of certain aspects of the plasma behaviour. Whencoupled to measurements of the simultaneous millimetre wave output of the gyrotron and the collapsingelectrical impedance of the diode gap, these experiments demonstrate the role of the plasma interminating the millimetre wave output pulse. Complementary experiments have used high speedframing photography to observe the spatial distribution of the cathode 'hot spots' as a function of theinsulating magnetic field strength, during the low voltage arc discharge, subsequent to the terminationof the gyrotron output. These diagnostic techniques have been applied to investigate the suitability ofdifferent cathode materials as plasma flare sources for high power gyrotron oscillators.

Citation Download Citation

K. Ronald "High speed diagnostic study of pulsed, cold cathode, gyrotrons", Proc. SPIE 2104, 18th International Conference on Infrared and Millimeter Waves, 21046F (30 August 1993); https://doi.org/10.1117/12.2298663

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available