ISSN:
1089-7623
Source:
AIP Digital Archive
Topics:
Physics
,
Electrical Engineering, Measurement and Control Technology
Notes:
A pulsed hot cathode hydrogen discharge of several milliseconds duration is used to produce a dense (〈1014 cm−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 LaB6 slab cathode along a 0.1-T magnetic field to a gas-fed anode. Background hydrogen (∼1 Pa) and contaminant gas (〈10−2 Pa) are kept low by injecting H2 during the discharge into an evacuated (∼10−4 Pa) chamber. One drawback of this discharge for atomic physics applications is that at high plasma density (ne 〉2×1013 cm−3), sufficient fluxes of 〉1-keV x rays are produced to flood our solid-state detectors with background counts.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.1139080
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