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Title: Dynamics of orbital alignment in a laser-generated plasma.

Abstract

We observe the time evolution of ground-state ion alignment in a laser-produced plasma. Krypton ions produced in a strong, linearly polarized optical laser field (10{sup 14}-10{sup 15} W/cm{sup 2}) are aligned along the field polarization axis. Using microfocused, tunable x rays from Argonne's Advanced Photon Source, we measure orbital alignment as a function of time. For plasma densities of the order of 10{sup 14} cm{sup -3}, the alignment decays within a few nanoseconds. A quantitative model explains the decay in terms of electron-ion collisions in the plasma. By applying an external magnetic field, we are able to suppress the disalignment and induce coherent spin precession of the Kr ions, thus providing an in situ monitor of magnetic fields in a plasma.

Authors:
; ; ; ; ; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
962535
Report Number(s):
ANL/CHM/JA-57001
Journal ID: ISSN 0031-9007; PRLTAO; TRN: US0902880
DOE Contract Number:  
DE-AC02-06CH11357
Resource Type:
Journal Article
Resource Relation:
Journal Name: Phys. Rev. Lett.; Journal Volume: 75; Journal Issue: 2007
Country of Publication:
United States
Language:
ENGLISH
Subject:
43 PARTICLE ACCELERATORS; ADVANCED PHOTON SOURCE; ALIGNMENT; DECAY; ELECTRON-ION COLLISIONS; KRYPTON IONS; LASER-PRODUCED PLASMA; LASERS; MAGNETIC FIELDS; MONITORS; PLASMA; POLARIZATION; PRECESSION; SPIN

Citation Formats

Hoehr, C., Peterson, E. R., Rohringer, N., Rudati, J., Arms, D. A., Dufresne, E. M., Dunford, R. W., Ederer, D. L., Kanter, E. P., Kraessig, B., Landahl, E. C., Santra, R., Southworth, S. H., and Young, L. Dynamics of orbital alignment in a laser-generated plasma.. United States: N. p., 2007. Web. doi:10.1103/PhysRevA.75.011403.
Hoehr, C., Peterson, E. R., Rohringer, N., Rudati, J., Arms, D. A., Dufresne, E. M., Dunford, R. W., Ederer, D. L., Kanter, E. P., Kraessig, B., Landahl, E. C., Santra, R., Southworth, S. H., & Young, L. Dynamics of orbital alignment in a laser-generated plasma.. United States. doi:10.1103/PhysRevA.75.011403.
Hoehr, C., Peterson, E. R., Rohringer, N., Rudati, J., Arms, D. A., Dufresne, E. M., Dunford, R. W., Ederer, D. L., Kanter, E. P., Kraessig, B., Landahl, E. C., Santra, R., Southworth, S. H., and Young, L. Mon . "Dynamics of orbital alignment in a laser-generated plasma.". United States. doi:10.1103/PhysRevA.75.011403.
@article{osti_962535,
title = {Dynamics of orbital alignment in a laser-generated plasma.},
author = {Hoehr, C. and Peterson, E. R. and Rohringer, N. and Rudati, J. and Arms, D. A. and Dufresne, E. M. and Dunford, R. W. and Ederer, D. L. and Kanter, E. P. and Kraessig, B. and Landahl, E. C. and Santra, R. and Southworth, S. H. and Young, L.},
abstractNote = {We observe the time evolution of ground-state ion alignment in a laser-produced plasma. Krypton ions produced in a strong, linearly polarized optical laser field (10{sup 14}-10{sup 15} W/cm{sup 2}) are aligned along the field polarization axis. Using microfocused, tunable x rays from Argonne's Advanced Photon Source, we measure orbital alignment as a function of time. For plasma densities of the order of 10{sup 14} cm{sup -3}, the alignment decays within a few nanoseconds. A quantitative model explains the decay in terms of electron-ion collisions in the plasma. By applying an external magnetic field, we are able to suppress the disalignment and induce coherent spin precession of the Kr ions, thus providing an in situ monitor of magnetic fields in a plasma.},
doi = {10.1103/PhysRevA.75.011403},
journal = {Phys. Rev. Lett.},
number = 2007,
volume = 75,
place = {United States},
year = {Mon Jan 01 00:00:00 EST 2007},
month = {Mon Jan 01 00:00:00 EST 2007}
}