Evolution of spectral power density in grounded-cathode relativistic magnetron

Itzhak Schnitzer; Avner Rosenberg; Chaim Leibovitch; I. Cohen; M. Botton; J. Leopold

doi:10.1117/12.255399

28 October 1996 Evolution of spectral power density in grounded-cathode relativistic magnetron

Itzhak Schnitzer, Avner Rosenberg, Chaim Leibovitch, I. Cohen, M. Botton, J. Leopold

Proceedings Volume 2843, Intense Microwave Pulses IV; (1996) https://doi.org/10.1117/12.255399
Event: SPIE's 1996 International Symposium on Optical Science, Engineering, and Instrumentation, 1996, Denver, CO, United States

Abstract

A novel, rep-rated, relativistic magnetron design is demonstrated. Unlike other relativistic magnetrons, the high voltage pulse is positively charged, feeding the anode block, while the cathode is grounded. Moreover, the anode- cathode interaction space is centered in a larger buffer cavity that serves as an electric insulator and electromagnetic impedance matching between the anode block and the exit waveguide(s). The grounded cathode geometry eliminates the axial current (improving efficiency) and enables the use of compact, CW, U-shaped electromagnet. It may also be utilized for frequency tunability through the buffer cavity in a way similar to coaxial magnetrons. Operation with peak power of 50 MW (100 MW) and pulse length of 150 ns (70 ns) has been achieved. Employing metal- dielectric cathodes led to repetitive operation up to 10 Hz. The analysis emphasizes time-resolved spectral power density of both in-cavity and emitted microwaves in regard to the undesirable occurrence of pulse shortening.

Citation Download Citation

Itzhak Schnitzer, Avner Rosenberg, Chaim Leibovitch, I. Cohen, M. Botton, and J. Leopold "Evolution of spectral power density in grounded-cathode relativistic magnetron", Proc. SPIE 2843, Intense Microwave Pulses IV, (28 October 1996); https://doi.org/10.1117/12.255399

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