Origin of the B-dot jump observed in precision liner experiments
- Los Alamos National Lab., NM (United States)
- EG and G/EM, Los Alamos, NM (United States). Los Alamos Operation
In the liner-ejecta experiments carried out at the Los Alamos pulsed power facility Pegasus II, a solid liner was magnetically imploded to impact on a target cylinder to produce the shock-induced ejecta. As a result of improved time resolution for the B-dot (dB/dt) probes fielded last fall, the authors began to notice a sharp jump in the B-dot curve occurring at a time very close to the expected liner-target collision time. This jump was also found in the time derivative of the calculated current (dI/dt) obtained from code simulation. They have shown that the jump is indeed caused by the collision as a sudden change of the liner velocity would induce a sudden jump in the time derivative of the inductance. They have derived a general formula for calculating the jump in dI/dt and verified that the result computed from it is in good agreement with the code simulation. Useful diagnostic applications of the B-dot jump are discussed. This paper is relevant for magnetized target fusion.
- Research Organization:
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- W-7405-ENG-36; AC08-93NV11265
- OSTI ID:
- 102228
- Report Number(s):
- LA-UR-95-2388; EGG-11265-5043; CONF-950750-27; ON: DE95016894; TRN: 95:020454
- Resource Relation:
- Conference: 10. Institute of Electrical and Electronics Engineers (IEEE) pulsed power conference, Albuquerque, NM (United States), 10-13 Jul 1995; Other Information: PBD: [1995]
- Country of Publication:
- United States
- Language:
- English
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