High-spin study of octupole-deformed 222Th and reduction of the background from prompt fission.

J. F. Smith; N. J. Hammond; P. Bednarczyk; D. M. Cullen; D. Curien; O. Dorvaux; A. M. Fletcher; B. P. Gall; J. C. Lisle; L. K. Pattison; N. Schulz; G. Sletten; A. G. Smith; M. Whitehead

High-spin study of octupole-deformed 222Th and reduction of the background from prompt fission.

J. F. Smith
, N. J. Hammond
, P. Bednarczyk
, D. M. Cullen
, D. Curien
, O. Dorvaux
, A. M. Fletcher
, B. P. Gall
, J. C. Lisle
, L. K. Pattison
, N. Schulz
, G. Sletten
, A. G. Smith
, M. Whitehead

Research output: Chapter in Book/Conference proceeding › Conference contribution

Abstract

High-spin states have been studied in the octupole-deformed 222Th nucleus using the 208Pb(18O,4n) reaction. De-excitation gamma rays were detected using the Euroball-IV gamma-ray spectrometer. The large background of gamma rays from prompt fission fragments, which generally hampers the spectroscopy of actinide nuclei in fusion-evapn. reactions, has been reduced using the Euroball-IV inner BGO ball as a sum-energy filter. With the requirement that the summed gamma-ray energy detected in the reaction is less than 10 MeV, the intensity of 222Th gamma-rays, relative to the prompt fission background is significantly improved. The expt. and data anal. are discussed, and preliminary spectroscopic results are presented. [on SciFinder (R)]

Original language	English
Title of host publication	AIP Conference Proceedings
Volume	656
Publication status	Published - 2003

Keywords

Nuclear energy level (of thorium 222); Gamma ray (of thorium 222 and redn. of the background from prompt fission); Fission (redn. of gamma ray background from prompt fission)

Cite this

@inproceedings{df00c82eb42945d89b298f636fc51c79,

title = "High-spin study of octupole-deformed 222Th and reduction of the background from prompt fission.",

abstract = "High-spin states have been studied in the octupole-deformed 222Th nucleus using the 208Pb(18O,4n) reaction. De-excitation gamma rays were detected using the Euroball-IV gamma-ray spectrometer. The large background of gamma rays from prompt fission fragments, which generally hampers the spectroscopy of actinide nuclei in fusion-evapn. reactions, has been reduced using the Euroball-IV inner BGO ball as a sum-energy filter. With the requirement that the summed gamma-ray energy detected in the reaction is less than 10 MeV, the intensity of 222Th gamma-rays, relative to the prompt fission background is significantly improved. The expt. and data anal. are discussed, and preliminary spectroscopic results are presented. [on SciFinder (R)]",

keywords = "Nuclear energy level (of thorium 222); Gamma ray (of thorium 222 and redn. of the background from prompt fission); Fission (redn. of gamma ray background from prompt fission)",

author = "Smith, \{J. F.\} and Hammond, \{N. J.\} and P. Bednarczyk and Cullen, \{D. M.\} and D. Curien and O. Dorvaux and Fletcher, \{A. M.\} and Gall, \{B. P.\} and Lisle, \{J. C.\} and Pattison, \{L. K.\} and N. Schulz and G. Sletten and Smith, \{A. G.\} and M. Whitehead",

year = "2003",

language = "English",

volume = "656",

booktitle = "AIP Conference Proceedings",

}

TY - GEN

T1 - High-spin study of octupole-deformed 222Th and reduction of the background from prompt fission.

AU - Smith, J. F.

AU - Hammond, N. J.

AU - Bednarczyk, P.

AU - Cullen, D. M.

AU - Curien, D.

AU - Dorvaux, O.

AU - Fletcher, A. M.

AU - Gall, B. P.

AU - Lisle, J. C.

AU - Pattison, L. K.

AU - Schulz, N.

AU - Sletten, G.

AU - Smith, A. G.

AU - Whitehead, M.

PY - 2003

Y1 - 2003

N2 - High-spin states have been studied in the octupole-deformed 222Th nucleus using the 208Pb(18O,4n) reaction. De-excitation gamma rays were detected using the Euroball-IV gamma-ray spectrometer. The large background of gamma rays from prompt fission fragments, which generally hampers the spectroscopy of actinide nuclei in fusion-evapn. reactions, has been reduced using the Euroball-IV inner BGO ball as a sum-energy filter. With the requirement that the summed gamma-ray energy detected in the reaction is less than 10 MeV, the intensity of 222Th gamma-rays, relative to the prompt fission background is significantly improved. The expt. and data anal. are discussed, and preliminary spectroscopic results are presented. [on SciFinder (R)]

AB - High-spin states have been studied in the octupole-deformed 222Th nucleus using the 208Pb(18O,4n) reaction. De-excitation gamma rays were detected using the Euroball-IV gamma-ray spectrometer. The large background of gamma rays from prompt fission fragments, which generally hampers the spectroscopy of actinide nuclei in fusion-evapn. reactions, has been reduced using the Euroball-IV inner BGO ball as a sum-energy filter. With the requirement that the summed gamma-ray energy detected in the reaction is less than 10 MeV, the intensity of 222Th gamma-rays, relative to the prompt fission background is significantly improved. The expt. and data anal. are discussed, and preliminary spectroscopic results are presented. [on SciFinder (R)]

KW - Nuclear energy level (of thorium 222); Gamma ray (of thorium 222 and redn. of the background from prompt fission); Fission (redn. of gamma ray background from prompt fission)

M3 - Conference contribution

VL - 656

BT - AIP Conference Proceedings

ER -

High-spin study of octupole-deformed 222Th and reduction of the background from prompt fission.

Abstract

Keywords

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