Computer Science
Scientific paper
Mar 1962
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1962natur.193..976v&link_type=abstract
Nature, Volume 193, Issue 4819, pp. 976-977 (1962).
Computer Science
2
Scientific paper
A CHLORINE-FILLED all-glass ozonizer (pcl2 = 120 mm. mercury at 30°) under alternating-current (50 cycles/sec.) excitation produced a new effect, hitherto unreported, when irradiated with β- or/and γ-rays. Under identical conditions of excitation and detection. β- or/and γ-radiations of fixed activity increased the discharge current i (in darkness) at low applied potentials and as the applied potential is enhanced gradually this increase + Δ i in i decreased and reversed sign to - Δ i. While this phenomenon is comparable to the effect of light on the conductivity in gases under electrical excitation and comprehensible according to the well-known mechanisms for the latter, it is further observed, as the activity of the β- or/and γ-emanation is increased, that +/- Δ i increased gradually at constant applied potential V to attain saturation at large activities. Similar to the inversion of + Δ i to - Δ i with applied potential, an activity inversion under constant V has been observed while the activity is increased gradually from 525 to 6,650 counts/min. + Δ i appeared to be analogous to the photosensitivity of Geiger-Müller counters, while the positive ion mechanism which involves the quenching action of the positive ion space charge formed at the momentary anode leads to - Δ i as a space charge effect.
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