The preparation of a 239Pu mother source for the production of 235mU targets

J. Pauwels; R. Eykens; D. D'eer; C. Wagemans; M. Neve de Mevergnies

doi:10.1016/0168-9002(87)91169-7

The preparation of a ²³⁹Pu mother source for the production of ^235mU targets

J. Pauwels, R. Eykens, D. D'eer, C. Wagemans, M. Neve de Mevergnies

Research output › peer-review

Abstract

One of the major difficulties to study the properties of ^235mU is the short half-life of the target nuclide (t 1 2=26.1 min), so that an easy to operate system of routine production of appropriate targets installed close to the measuring facility is required. Such a system was developed in the form of a 40 cm diameter aluminium sphere internally coated by vacuum deposition with ²³⁹PuF₃. The ^235mU recoils are collected in vacuum on gold-coated polyimide foils which are introduced via a movable target holder and are put at a negative potential to increase the collection efficiency. At 1 kV and 1 Pa the number of collected nuclei after one half-life is 8 × 10⁹. Contamination by ²³⁹Pu is negligible.

Original language	English
Pages (from-to)	21-25
Number of pages	5
Journal	Nuclear Inst. and Methods in Physics Research, A
Volume	257
Issue number	1
DOIs	https://doi.org/10.1016/0168-9002(87)91169-7
State	Published - 1 Jun 1987

ASJC Scopus subject areas

Nuclear and High Energy Physics
Instrumentation

Access to Document

10.1016/0168-9002(87)91169-7

Cite this

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title = "The preparation of a 239Pu mother source for the production of 235mU targets",

abstract = "One of the major difficulties to study the properties of 235mU is the short half-life of the target nuclide (t 1 2=26.1 min), so that an easy to operate system of routine production of appropriate targets installed close to the measuring facility is required. Such a system was developed in the form of a 40 cm diameter aluminium sphere internally coated by vacuum deposition with 239PuF3. The 235mU recoils are collected in vacuum on gold-coated polyimide foils which are introduced via a movable target holder and are put at a negative potential to increase the collection efficiency. At 1 kV and 1 Pa the number of collected nuclei after one half-life is 8 × 109. Contamination by 239Pu is negligible.",

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AU - Eykens, R.

AU - D'eer, D.

AU - Wagemans, C.

AU - de Mevergnies, M. Neve

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N2 - One of the major difficulties to study the properties of 235mU is the short half-life of the target nuclide (t 1 2=26.1 min), so that an easy to operate system of routine production of appropriate targets installed close to the measuring facility is required. Such a system was developed in the form of a 40 cm diameter aluminium sphere internally coated by vacuum deposition with 239PuF3. The 235mU recoils are collected in vacuum on gold-coated polyimide foils which are introduced via a movable target holder and are put at a negative potential to increase the collection efficiency. At 1 kV and 1 Pa the number of collected nuclei after one half-life is 8 × 109. Contamination by 239Pu is negligible.

AB - One of the major difficulties to study the properties of 235mU is the short half-life of the target nuclide (t 1 2=26.1 min), so that an easy to operate system of routine production of appropriate targets installed close to the measuring facility is required. Such a system was developed in the form of a 40 cm diameter aluminium sphere internally coated by vacuum deposition with 239PuF3. The 235mU recoils are collected in vacuum on gold-coated polyimide foils which are introduced via a movable target holder and are put at a negative potential to increase the collection efficiency. At 1 kV and 1 Pa the number of collected nuclei after one half-life is 8 × 109. Contamination by 239Pu is negligible.

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