Abstract
To elucidate the influence on charge-exchange Spectroscopy of metastable deuterium donors, the corresponding cross sections for state-selective charge transfer have been calculated using the classical trajectory Monte Carlo method. The cross sections for electron capture from D(n = 2) by fully stripped low-Z ions are contrasted with those for capture from ground state D to indicate the importance of metastable donors. Using the new data, effective emission coefficients for the spectral lines of H-like light impurities used in charge-exchange spectroscopy have been calculated. These results incorporate the presence of excited n = 2 donors in the beam and apply to a wide range of neutral deuterium beam energies. For beam energies below approximately 25 keV amu(-1) a small fraction of D(n = 2) in the beam becomes of importance and at lower energies it even starts to dominate the charge-exchange spectroscopy observations.
Original language | English |
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Pages (from-to) | 1541-1550 |
Number of pages | 10 |
Journal | Plasma Physics and Controlled Fusion |
Volume | 40 |
Issue number | 8 |
DOIs | |
Publication status | Published - Aug-1998 |
Keywords
- ELECTRON-CAPTURE COLLISIONS
- POLARIZED-LIGHT EMISSION
- CROSS-SECTIONS
- ENERGY COLLISIONS
- HYDROGEN-ATOMS
- SPECTROSCOPY
- EXCITATION
- IONIZATION
- STATE