Visible spectroscopy measurements in the PBFA II (Particle Beam Fusion Accelerator) ion diode

Conference · Mon Jan 01 04:00:00 EST 1990

OSTI ID:6938227

Bailey, J; Carlson, A L; Morrison, R L ^[1]; Maron, Y ^[2]

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1. Sandia National Labs., Albuquerque, NM (USA)
2. Weizmann Inst. of Science, Rehovoth (Israel). Dept. of Physics

We describe a new visible spectroscopy diagnostic system for measuring plasma properties in the PBFA II applied-B ion diode. The system transports light from the ion diode to a remote screen room where it is recorded by a spectrography coupled to a streak camera. We developed extensive calibration techniques for measuring the collection efficiency into the fiber link, the effects of the background bremsstrahlung radiation on the fibers, the fiber transmission as a function of wavelength, and the absolute streaked-spectrograph sensitivity as a function of wavelength. We have recorded time-dependent spectral line profiles and intensities from the PBFA II plasma opening switch, the beam-transport gas cell, and the anode plasma. The Stark shift of the LiI 2s-2p transition observed on LiF-anode shots shows that the time-resolved electric field peaks at 7--8 MV/cm, the highest field ever measured using the Stark effect. The potential of these measurements to expand our knowledge of ion-diode physics is being explored. 24 refs., 8 figs.

• Research Organization: Sandia National Labs., Albuquerque, NM (USA)
• Sponsoring Organization: DOE/DP
• DOE Contract Number: AC04-76DP00789
• OSTI ID: 6938227
• Report Number(s): SAND-90-0631C; CONF-900557--4; ON: DE90010828
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700208* -- Fusion Power Plant Technology-- Inertial Confinement Technology
ACCELERATORS
BEAM TRANSPORT
BREMSSTRAHLUNG
CALIBRATION
CAMERAS
DIODE TUBES
ELECTRICAL EQUIPMENT
ELECTROMAGNETIC RADIATION
ELECTRON TUBES
EQUIPMENT
MEASURING INSTRUMENTS
PARTICLE BEAM FUSION ACCELERATOR
PLASMA SWITCHES
RADIATION DETECTORS
RADIATIONS
SPECTROSCOPY
STREAK CAMERAS
SWITCHES
THERMIONIC DIODES
THERMIONIC TUBES