In-beam spectroscopy in the actinide region using an evaporation residue detector

W. Reviol; D. G. Sarantites; C. J. Chiara; M. Montero; O. L. Pechenaya

In-beam spectroscopy in the actinide region using an evaporation residue detector

W. Reviol, D. G. Sarantites, C. J. Chiara, M. Montero, O. L. Pechenaya

Research output: Contribution to journal › Conference article › peer-review

Abstract

The evaporation-residue counter HERCULES, an auxiliary detector for GAMMASPHERE to perform spectroscopy in the presence of a large fission background, is described. Results from a typical experiment using the ²⁶Mg + ¹⁹⁸Pt → ²²⁴Th* reaction at 128 MeV are discussed. The discussion focuses on the new ²²⁰Th level scheme. The simplex feature (alternating-parity levels) persists up to the highest spins observed. However, ²²⁰Th exhibits a more vibrational-like behavior than the heavier Th isotopes. A novel interpretation for ²²⁰Th based on a picture of tidal waves on a reflection- asymmetric nuclear surface is briefly reviewed. Finally, the identification of excited states in ²¹⁹Th is discussed.

Original language	English
Pages (from-to)	1547-1555
Number of pages	9
Journal	Acta Physica Polonica B
Volume	38
Issue number	4
State	Published - Apr 1 2007
Event	41st Zakopane Conference on Nuclear Physics - Trends in Nuclear Physics - Zakopane, Poland Duration: Sep 4 2006 → Sep 10 2006

Cite this

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title = "In-beam spectroscopy in the actinide region using an evaporation residue detector",

abstract = "The evaporation-residue counter HERCULES, an auxiliary detector for GAMMASPHERE to perform spectroscopy in the presence of a large fission background, is described. Results from a typical experiment using the 26Mg + 198Pt → 224Th* reaction at 128 MeV are discussed. The discussion focuses on the new 220Th level scheme. The simplex feature (alternating-parity levels) persists up to the highest spins observed. However, 220Th exhibits a more vibrational-like behavior than the heavier Th isotopes. A novel interpretation for 220Th based on a picture of tidal waves on a reflection- asymmetric nuclear surface is briefly reviewed. Finally, the identification of excited states in 219Th is discussed.",

author = "W. Reviol and Sarantites, {D. G.} and Chiara, {C. J.} and M. Montero and Pechenaya, {O. L.}",

year = "2007",

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journal = "Acta Physica Polonica B",

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TY - JOUR

T1 - In-beam spectroscopy in the actinide region using an evaporation residue detector

AU - Reviol, W.

AU - Sarantites, D. G.

AU - Chiara, C. J.

AU - Montero, M.

AU - Pechenaya, O. L.

PY - 2007/4/1

Y1 - 2007/4/1

N2 - The evaporation-residue counter HERCULES, an auxiliary detector for GAMMASPHERE to perform spectroscopy in the presence of a large fission background, is described. Results from a typical experiment using the 26Mg + 198Pt → 224Th* reaction at 128 MeV are discussed. The discussion focuses on the new 220Th level scheme. The simplex feature (alternating-parity levels) persists up to the highest spins observed. However, 220Th exhibits a more vibrational-like behavior than the heavier Th isotopes. A novel interpretation for 220Th based on a picture of tidal waves on a reflection- asymmetric nuclear surface is briefly reviewed. Finally, the identification of excited states in 219Th is discussed.

AB - The evaporation-residue counter HERCULES, an auxiliary detector for GAMMASPHERE to perform spectroscopy in the presence of a large fission background, is described. Results from a typical experiment using the 26Mg + 198Pt → 224Th* reaction at 128 MeV are discussed. The discussion focuses on the new 220Th level scheme. The simplex feature (alternating-parity levels) persists up to the highest spins observed. However, 220Th exhibits a more vibrational-like behavior than the heavier Th isotopes. A novel interpretation for 220Th based on a picture of tidal waves on a reflection- asymmetric nuclear surface is briefly reviewed. Finally, the identification of excited states in 219Th is discussed.

UR - http://www.scopus.com/inward/record.url?scp=34548668232&partnerID=8YFLogxK

M3 - Conference article

AN - SCOPUS:34548668232

SN - 0587-4254

VL - 38

SP - 1547

EP - 1555

JO - Acta Physica Polonica B

JF - Acta Physica Polonica B

IS - 4

T2 - 41st Zakopane Conference on Nuclear Physics - Trends in Nuclear Physics

Y2 - 4 September 2006 through 10 September 2006

ER -

In-beam spectroscopy in the actinide region using an evaporation residue detector

Abstract

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