Investigation of the low-lying isomer in 229Th by collinear laser spectroscopy

B Tordoff; J Billowes; P Campbell; B Cheal; DH Forest; T Kessler; J Lee; ID Moore; Anton Popov; Garry Tungate; J  yst

doi:10.1007/s10751-006-9487-y

Investigation of the low-lying isomer in 229Th by collinear laser spectroscopy

B Tordoff, J Billowes, P Campbell, B Cheal, DH Forest, T Kessler, J Lee, ID Moore, Anton Popov, Garry Tungate, J yst

Physics and Astronomy

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Abstract

A new ion beam of Th-229 is available at the Jyvasklya IGISOL facility, produced from the alpha decay of U-223. A small branching ratio (approximate to 2%) is believed to populate the inferred low-lying (5.5 eV) isomeric state in Th-229. A laser ionization scheme is currently being developed to improve the yield of Th-229 from the source. The ion source uses a novel electric field configuration for fast and efficient extraction of alpha-recoils and is able to provide beams of short lived (tau >= 30 ms) radioactive nuclei. Identification of the isomeric state by collinear laser spectroscopy will reduce the lower lifetime limit of the state and provide the first direct evidence for its existence.

Original language	English
Pages (from-to)	197-201
Number of pages	5
Journal	Hyperfine Interactions
Volume	171
Issue number	1-3
Early online date	15 Feb 2007
DOIs	https://doi.org/10.1007/s10751-006-9487-y
Publication status	Published - 4 Apr 2007

Keywords

laser ionization
Th-229
collinear laser spectroscopy

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title = "Investigation of the low-lying isomer in 229Th by collinear laser spectroscopy",

abstract = "A new ion beam of Th-229 is available at the Jyvasklya IGISOL facility, produced from the alpha decay of U-223. A small branching ratio (approximate to 2%) is believed to populate the inferred low-lying (5.5 eV) isomeric state in Th-229. A laser ionization scheme is currently being developed to improve the yield of Th-229 from the source. The ion source uses a novel electric field configuration for fast and efficient extraction of alpha-recoils and is able to provide beams of short lived (tau >= 30 ms) radioactive nuclei. Identification of the isomeric state by collinear laser spectroscopy will reduce the lower lifetime limit of the state and provide the first direct evidence for its existence.",

keywords = "laser ionization, Th-229, collinear laser spectroscopy",

author = "B Tordoff and J Billowes and P Campbell and B Cheal and DH Forest and T Kessler and J Lee and ID Moore and Anton Popov and Garry Tungate and J yst",

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doi = "10.1007/s10751-006-9487-y",

language = "English",

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T1 - Investigation of the low-lying isomer in 229Th by collinear laser spectroscopy

AU - Tordoff, B

AU - Billowes, J

AU - Campbell, P

AU - Cheal, B

AU - Forest, DH

AU - Kessler, T

AU - Lee, J

AU - Moore, ID

AU - Popov, Anton

AU - Tungate, Garry

AU - yst, J

PY - 2007/4/4

Y1 - 2007/4/4

N2 - A new ion beam of Th-229 is available at the Jyvasklya IGISOL facility, produced from the alpha decay of U-223. A small branching ratio (approximate to 2%) is believed to populate the inferred low-lying (5.5 eV) isomeric state in Th-229. A laser ionization scheme is currently being developed to improve the yield of Th-229 from the source. The ion source uses a novel electric field configuration for fast and efficient extraction of alpha-recoils and is able to provide beams of short lived (tau >= 30 ms) radioactive nuclei. Identification of the isomeric state by collinear laser spectroscopy will reduce the lower lifetime limit of the state and provide the first direct evidence for its existence.

AB - A new ion beam of Th-229 is available at the Jyvasklya IGISOL facility, produced from the alpha decay of U-223. A small branching ratio (approximate to 2%) is believed to populate the inferred low-lying (5.5 eV) isomeric state in Th-229. A laser ionization scheme is currently being developed to improve the yield of Th-229 from the source. The ion source uses a novel electric field configuration for fast and efficient extraction of alpha-recoils and is able to provide beams of short lived (tau >= 30 ms) radioactive nuclei. Identification of the isomeric state by collinear laser spectroscopy will reduce the lower lifetime limit of the state and provide the first direct evidence for its existence.

KW - laser ionization

KW - Th-229

KW - collinear laser spectroscopy

U2 - 10.1007/s10751-006-9487-y

DO - 10.1007/s10751-006-9487-y

M3 - Article

VL - 171

SP - 197

EP - 201

JO - Hyperfine Interactions

JF - Hyperfine Interactions

IS - 1-3

ER -

Investigation of the low-lying isomer in 229Th by collinear laser spectroscopy

Abstract

Keywords

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