A 4π-fission detector

A. Deruytter

doi:10.1016/0029-554X(60)90119-1

A 4π-fission detector

A. Deruytter

Research output › peer-review

Abstract

A technique has been developed to prepare fission foils of uniform thickness on thin plastic films (VYNS-3) coated with Al, to be used as a cathode inside a 4π chamber. The optimum thickness of the Al-coating is 2.5 μg/cm² on both sides of the film. These films are brought in an ionisation chamber filled with a mixture of 98% A and 2% N₂. The influence of the thickness of the U²³⁵-film on the discrimination between fission and alpha pulses has been studied. The evaluated efficiency of the counter for a 1 mg/cm² U²³⁵O₂-foil is (92 ± 1)%; for a 0.1 mg/cm² foil (97.5 ± 0.3)%.

Original language	English
Pages (from-to)	145-152
Number of pages	8
Journal	Nuclear Instruments and Methods
Volume	7
Issue number	2
DOIs	https://doi.org/10.1016/0029-554X(60)90119-1
State	Published - May 1960
Externally published	Yes

ASJC Scopus subject areas

General Medicine

Access to Document

10.1016/0029-554X(60)90119-1

Cite this

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title = "A 4π-fission detector",

abstract = "A technique has been developed to prepare fission foils of uniform thickness on thin plastic films (VYNS-3) coated with Al, to be used as a cathode inside a 4π chamber. The optimum thickness of the Al-coating is 2.5 μg/cm2 on both sides of the film. These films are brought in an ionisation chamber filled with a mixture of 98\% A and 2\% N2. The influence of the thickness of the U235-film on the discrimination between fission and alpha pulses has been studied. The evaluated efficiency of the counter for a 1 mg/cm2 U235O2-foil is (92 ± 1)\%; for a 0.1 mg/cm2 foil (97.5 ± 0.3)\%.",

author = "A. Deruytter",

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N2 - A technique has been developed to prepare fission foils of uniform thickness on thin plastic films (VYNS-3) coated with Al, to be used as a cathode inside a 4π chamber. The optimum thickness of the Al-coating is 2.5 μg/cm2 on both sides of the film. These films are brought in an ionisation chamber filled with a mixture of 98% A and 2% N2. The influence of the thickness of the U235-film on the discrimination between fission and alpha pulses has been studied. The evaluated efficiency of the counter for a 1 mg/cm2 U235O2-foil is (92 ± 1)%; for a 0.1 mg/cm2 foil (97.5 ± 0.3)%.

AB - A technique has been developed to prepare fission foils of uniform thickness on thin plastic films (VYNS-3) coated with Al, to be used as a cathode inside a 4π chamber. The optimum thickness of the Al-coating is 2.5 μg/cm2 on both sides of the film. These films are brought in an ionisation chamber filled with a mixture of 98% A and 2% N2. The influence of the thickness of the U235-film on the discrimination between fission and alpha pulses has been studied. The evaluated efficiency of the counter for a 1 mg/cm2 U235O2-foil is (92 ± 1)%; for a 0.1 mg/cm2 foil (97.5 ± 0.3)%.

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