Abstract
A novel diagnostic technique for the measurement of negative ions is presented. The absorption of a cw-laser beam with a wavelength close to the maximum of the photodetachment cross section is measured. The laser beam undergoes multiple reflections through the discharge volume using a multipass cell there a Herriott arrangement). Proof-of-principle measurements of negative hydrogen ions in a hybrid volume source are presented. The measured H- density is in agreement with results of conventional, Langmuir probe-based photodetachment measurements. (C) 1998 American Institute of Physics. [S0003-6951(98)02119-6].
| Original language | English |
|---|---|
| Pages (from-to) | 2394-2396 |
| Number of pages | 3 |
| Journal | Applied Physics Letters |
| Volume | 72 |
| Issue number | 19 |
| Publication status | Published - 1998 |
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)