Barrett H Ripin

47587954, Jul 19, 1988

Jul 1, 1986

6/880866

Barrett H. Ripin - Bethesda MD
Wallace Manheimer - Silver Spring MD

The United States of America as represented by the Secretary of the Navy - Washington DC

H01S 100
H01P 100
H01J 2534

330 4

A plasma-filled waveguide acts as a dispersive element for pulse compression or power multiplication of a frequency chirped microwave signal. In one embodiment, the frequency of the source is chirped near a plasma resonance while the plasma waveguide is held contant in time. In a second embodiment, the source frequency is held fixed while the plasma filled waveguide parameters are varied in time in the vicinity of a plasma resonance.

45979332, Jul 1, 1986

Jun 1, 1983

6/500127

Barrett H. Ripin - Silver Spring MD
Robert R. Whitlock - College Park MD

The United States of America as represented by the Secretary of the Navy - Washington DC

G01T 136

376153

An apparatus for measuring the emissivity and opacity coefficients of a test plasma. The apparatus includes a target comprising a support structure of a carrier material with an asymmetrical sample of a test material disposed thereon, a driver for ionizing the test material into a test plasma and the carrier material into a carrier plasma, and spectrographs for measuring the intensity of photons traversing said test plasma. Embodiments including a separate photon source are also disclosed.