Solenogam: A new detector array for <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline" id="d1e3430" altimg="si114.svg"><mml:mi>γ</mml:mi></mml:math>-ray and conversion-electron spectroscopy of long-lived states in fusion-evaporation products

Gerathy, M. S. M.; Lane, G. J.; Dracoulis, George; Nieminen, P.; Kibédi, T.; Reed, M. W.; Akber, A.; Coombes, B. J.; Dasgupta, M.; Dowie, J. T. H.; Gray, Tom J.; Hinde, David; Lee, Boon Quan; Mitchell, A. J.; Palazzo, T.; Stuchbery, A.E.; Whichello, L.; Wright, Adelle

doi:10.1016/j.nima.2019.163136

Cited by 4 publications

(3 citation statements)

References 29 publications

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“…After implantation in a catcher tape at the focal point of the Solenogam array, γ rays and electrons were detected using five Ortec Gamma-X HPGe detectors (four with Compton suppression), one Ortec LEPS detector, and six Si(Li) detectors; see Refs. [14] and [15] for more complete descriptions of SOLITAIRE and Solenogam. Initial measurements were obtained at a beam energy of 110 MeV.…”

Section: Methodsmentioning

confidence: 99%

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Gamma-ray and conversion-electron spectroscopy of the high-spin isomer in 145Sm

Gerathy,

Lane,

Stuchbery

et al. 2020

Preprint

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Background: High-spin isomers at ≈9-MeV excitation energies have been reported in several N = 83 isotones near Z = 64. Spin and parity assignments of J π = 49/2 + remain tentative for a number of these states in the odd-A nuclei.Purpose: To study the decay of the (49/2 + ) high-spin isomer in 145 Sm, make firm spin and parity assignments to the isomer and states populated in its decay, and investigate the structure of the nucleus. Methods:The 145 Sm isomer was populated in the 124 Sn( 26 Mg,5n) reaction. Gamma-ray and conversion-electron data were collected using the Solenogam array.Results: A revised lifetime of t 1/2 = 3.52( 16) µs was measured for the high-spin isomer. Several new states have been added to the level scheme, and a new state at 8815 keV is proposed as the isomer, based on decayproperty systematics, transition strengths, and spin and parity assignments. Firm spin and parity assignments have been made to states up to and including the isomer and the new level scheme is interpreted using shell-model calculations performed with the KShell program. Conclusions:The interpretation of the 49/2 + isomer as a deformed excitation of the core neutrons remains unchanged, although there has been a significant revision of the level scheme below the isomer, and hence significant reinterpretations of the lower-lying states.

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Section: Methodsmentioning

confidence: 99%

“…In the present work, the decay of the high-spin isomer in 145 Sm has been studied using the Solenogam array [14]. Solenogam is a system of γ-ray and electron detectors coupled to the recoil separator SOLITAIRE at the Australian National University Heavy-Ion Accelerator Facility (ANU-HIAF).…”

Section: Introductionmentioning

confidence: 99%

Gamma-ray and conversion-electron spectroscopy of the high-spin isomer in 145Sm

Gerathy,

Lane,

Stuchbery

et al. 2020

Preprint

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“…The solenoidal separators have proven to be extremely versatile instruments, with applications ranging from basic nuclear physics, through materials science, to light radioactive ion beam production (SOLEROO) [44]. SolenoGam is an array of electron and γ-ray detectors that can be placed in close geometry around the focal plane of the solenoid, hence enabling the spectroscopy of longlived weakly-populated states to be performed in a lowbackground environment [45].…”

Section: Lines a And B: 65-and 8-tesla Solenoids Soleroo And Solenogammentioning

confidence: 99%

The Heavy Ion Accelerator Facility: Research Achievements and Aspirations

Stuchbery

2020

EPJ Web Conf.

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An overview of Australia’s Heavy Ion Accelerator Facility (HIAF) is presented, including a survey of the accelerator infrastructure and its capabilities, as well as the beam-line instrumentation. Some recent research achievements are highlighted. Accelerator upgrades and instrumentation developments in progress are described, along with some aspirations for the longer-term development of the Facility and its associated research programs.

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