Charge-exchange-produced K-shell x-ray emission from Ar{sup 16+} in a tokamak plasma with neutral-beam injection

Journal Article · Thu Sep 15 00:00:00 EDT 2005 · Physical Review. A

DOI:https://doi.org/10.1103/PhysRevA.72.032725· OSTI ID:20718563

Beiersdorfer, P; Marion, M ^[1]; Bitter, M ^[2]; Olson, R E ^[3]

---

1. High Temperature and Astrophysics Division, University of California Lawrence Livermore National Laboratory, Livermore, California 94551 (United States)
2. Princeton Plasma Physics Laboratory, Princeton, New Jersey 08543 (United States)
3. Physics Department, University of Missouri-Rolla, 1870 Miner Circle, Rolla, Missouri 65409 (United States)

High-resolution spectroscopy of a hot tokamak plasma seeded with argon ions and interacting with an energetic, short-pulse neutral hydrogen beam was used to obtain a high-resolution K-shell x-ray spectrum formed solely by charge exchange. The observed K-shell emission of Ar{sup 16+} is dominated by the intercombination and forbidden lines, providing clear signatures of charge exchange. Results from an ab initio atomic cascade model provide excellent agreement, validating a semiclassical approach for calculating charge-exchange cross sections.

• OSTI ID: 20718563
• Journal Information: Physical Review. A, Vol. 72, Issue 3; Other Information: DOI: 10.1103/PhysRevA.72.032725; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ARGON
ARGON IONS
BEAM INJECTION HEATING
CATIONS
CHARGE EXCHANGE
EMISSION
HYDROGEN
K SHELL
NEUTRAL ATOM BEAM INJECTION
PLASMA
PULSES
RESOLUTION
SEMICLASSICAL APPROXIMATION
SPECTROSCOPY
TOKAMAK DEVICES
X RADIATION
X-RAY SPECTRA