Recovery of Particle Detector Degeneration Based on the Pulse Height Spectrum of an Adaptive Trapezoidal Pulse Shaper

Important advances have been made in reducing the background counting rate of gas proportional counters for14C dating through detailed and systematic study of the background components. Until recently, limited work has been reported on the study of the background of liquid scintillation counters (LSC). During the last few years, commercial systems with greatly reduced background have been introduced. It is shown that the best gas proportional counters and LSC have similar backgrounds for the same amount of sample material. Similar results with less effort may be expected with more detailed and fundamental knowledge of the components of the background of LSC. We report the results of a study of one photomultiplier LSC system where we research all parameters of importance: light collection efficiency, absorbed energy per photo-electron, pulse height spectrum and background counting rate.

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GAMMASPHERE-elimination of ballistic deficit by using a quasi-trapezoidal pulse shaper

IEEE Transactions on Nuclear Science ◽

10.1109/23.322872 ◽

1994 ◽

Vol 41 (4) ◽

pp. 1140-1144 ◽

Cited By ~ 11

Author(s):

F.S. Goulding ◽

D.A. Landis ◽

N. Madden ◽

M. Maier ◽

H. Yaver

Keyword(s):

Pulse Shaper ◽

Ballistic Deficit ◽

Trapezoidal Pulse

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Interaction of 14.0 MeV-Neutrons with 12C in Stilbene

Zeitschrift für Naturforschung A ◽

10.1515/zna-1971-0222 ◽

1971 ◽

Vol 26 (2) ◽

pp. 317-319 ◽

Cited By ~ 3

Author(s):

H.-U. Fabian

Keyword(s):

Cross Sections ◽

Pulse Shape ◽

Charged Particles ◽

Pulse Height ◽

Pulse Height Spectrum ◽

Pulse Spectrum ◽

Heavy Charged Particles ◽

The Cross

AbstractThe pulse height spectrum of all heavy charged particles induced by 14.0 MeV neutrons in a 1" × 1" stilbene scintilla tor was measured using a pulse shape discriminator and the associated particle technique. The proton pulse spectrum was subtracted and the remaining alpha-pulse distribution is shown in a diagram. The sum of the cross sections for the reactions 12C (n, n') 3 α and 12C (n, α)9 Be was determined to be σc= (260±20) mb.

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APPLICABILITY OF PARALLEL PLATE AVALANCHE COUNTERS TO SPONTANEOUS FISSION FROM 252Cf

International Journal of Modern Physics E ◽

10.1142/s0218301312500528 ◽

2012 ◽

Vol 21 (04) ◽

pp. 1250052

Author(s):

ZAFAR YASIN ◽

KURT HANSEN ◽

MAGNUS LUNDIN ◽

ROGER RASSOL ◽

LENNART ISAKSSON ◽

...

Keyword(s):

Time Resolution ◽

Spontaneous Fission ◽

Parallel Plate ◽

Pulse Height ◽

Time Spectrum ◽

Computer Code ◽

Reaction Chamber ◽

Alpha Particles ◽

Good Time ◽

Pulse Height Spectrum

The construction and performance of the parallel plate avalanche counters (PPACs) using a spontaneous fission source 252 Cf is described in this paper. The parallel plate circular electrodes are made of aluminum foils having a thickness less than ten microns. After fabrication, the detectors and the source are mounted inside a reaction chamber, the source between the two detectors. A low pressure is created inside the chamber using isobutane ( C 4 H 10) and a high voltage is applied to the electrodes. The detectors are first operated at different pressures and voltages to find the optimum values of the pressure and the voltage. This is necessary to avoid the sparking threshold, to achieve a good time resolution and to keep the gain of the detectors high and constant. The PPACs are operated in 2π- and 4π-geometries. In 4π-geometry the detectors are allowed to function in coincidence and noncoincidence mode. The resulting pulse height and the time spectra are studied using the computer code ROOT and some conclusions are drawn from these analyses. The pulse height spectrum shows a clear separation between the fission fragments and the alpha particles and the time spectrum indicates a good intrinsic time resolution, 0.76 ns.

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