| Autor: |
Savas, S. E., Pyle, R. V., Berkner, K. H. |
| Předmět: |
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| Zdroj: |
Review of Scientific Instruments; Nov86, Vol. 57 Issue 11, p2699, 6p |
| Abstrakt: |
A pulsed hot cathode hydrogen discharge of several milliseconds duration is used to produce a dense (<10[sup 14] cm[sup -3]), uniform plasma target for atomic collision studies. This plasma, whose cross section is determined by the cathode shape, is rectangular, since it is produced by a discharge (1500 V, ∼100 A) from a 2 × 11-cm² rectangular LaB[sub 6] slab cathode along a 0.1-T magnetic field to a gas-fed anode. Background hydrogen (∼1 Pa) and contaminant gas (<10[sup -2] Pa) are kept low by injecting H[sub 2] during the discharge into an evacuated (∼10[sup -4] Pa) chamber. One drawback of this discharge for atomic physics applications is that at high plasma density (n[sub e] > 2 × 10[sup 13] cm[sup -3]), sufficient fluxes of >1-keV x rays are produced to flood our solid-state detectors with background counts. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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