Plasma Diffusion in a Space-Simulation Beam-Plasma Discharge.

Szuszczewicz, E. P.; Walker, D. N.; Holmes, J. C.; Leinbach, H.

Plasma Diffusion in a Space-Simulation Beam-Plasma Discharge.

Active / Technical Report | Accession Number: ADA066922 |

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Abstract:

Electron density and temperature profiles have been measured in a large-facility beam-plasma-dischargeV sub B 1.3 KeV, I sub B 63 ma at low pressure P 2-410 to the -6th powerTorr and low magnetic fields B 1.2 G. The results follow an exponential behavior and are found to be in good agreement with a simple diffusion model. The favorable comparison between theory and experiment yields the first estimate of cross-field electron diffusion perpendicular diffusion coefficientnom 2.2 million sq cmsec under conditions intended to simulate Spacelab-borne beam-plasma investigations. This value for perpendicular diffusion coefficient is orders of magnitude larger than would be expected for a cross-field collisional diffusion process, a result which is identified with the turbulent state of collective beam-plasma interactions.

Author(s):

Szuszczewicz, E. P. ; Walker, D. N. ; Holmes, J. C. ; Leinbach, H.

Author Organization(s):

NAVAL RESEARCH LAB WASHINGTON D C

Descriptive Note:

Interim rept.,

Pagination:

0019

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:

Approved For Public Release

RECORD

Collection: TR

Identifying Numbers

Report Number(s):

NRL-MR-3925, SBI-AD-E000 276

Task Number(s):

RR0330244

Project Number(s):

RR03302

Monitor Series:

AD-E000 276

Subject Terms

Joint Capability Areas:

JCA_1.2.7_Experimentation; JCA_6.3.3_Spectrum Management; JCA_6_Net Centric; JCA_1.2_Force Preparation; JCA_1_Force Support; JCA_3.2_Engagement; JCA_3_Force Application; JCA_5_Command and Control

Communities of Interest:

Materials and Manufacturing Processes

Descriptor(s):

*PLASMAS(PHYSICS), *ELECTRON BEAMS, *DIFFUSION, SIMULATION, MAGNETIC FIELDS, INTERACTIONS, ELECTRON DENSITY, TURBULENCE, ELECTRON ENERGY, SPACE SHUTTLES, IONIZATION, ENERGETIC PROPERTIES, PARTICLE COLLISIONS

Field(s)/Group(s):

Plasma Physics and Magnetohydrodynamics

Keyword(s):

Beam plasma interactions, PE61153N, WUA0211

Report Date:

1979 Feb 12