Very extended shapes in Cd-108: Evidence for the occupation of "hyper-intruder" orbitals

A Gorgen; RM Clark; P Fallon; M Cromaz; MA Deleplanque; RM Diamond; GJ Lane; IY Lee; AO Macchiavelli; RG Ramos; FS Stephens; CE Svensson; K Vetter; D Ward; MP Carpenters; RVF Janssens; R Wadsworth

Very extended shapes in Cd-108: Evidence for the occupation of "hyper-intruder" orbitals

A Gorgen^*, RM Clark, P Fallon, M Cromaz, MA Deleplanque, RM Diamond, GJ Lane, IY Lee, AO Macchiavelli, RG Ramos, FS Stephens, CE Svensson, K Vetter, D Ward, MP Carpenters, RVF Janssens, R Wadsworth

^*Corresponding author for this work

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

Abstract

High-spin states in Cd-108 were studied following the reaction Ni-64(Ca-48,4n) at abeam energy of 207 MeV Gamma rays were detected using the Gammasphere array. Two rotational bands have been observed at very high angular momentum. Measurements of fractional Doppler shifts yielded lower limits for the quadrupole moments and showed that the observed structures are at least as deformed as the superdeformed structures e.g. in the A approximate to 150 region, and possibly exceed a 2:1 axis ratio. The existence of very extended shapes has been predicted by cranked Strutinsky calculations, and recent projected shell model calculations suggest that the pii(13/2) hyper-intruder orbital is occupied in these newly observed bands.

Original language	English
Title of host publication	FRONTIERS OF NUCLEAR STRUCTURE
Editors	P Fallon, R Clark
Place of Publication	MELVILLE
Publisher	American Institute of Physics
Pages	17-24
Number of pages	8
ISBN (Print)	0-7354-0116-0
Publication status	Published - 2003
Event	Conference on Frontiers of Nuclear Structure - BERKELEY, Canada Duration: 29 Jul 2002 → 2 Aug 2002

Publication series

Name	AIP CONFERENCE PROCEEDINGS
Publisher	AMER INST PHYSICS
Volume	656
ISSN (Print)	0094-243X

Conference

Conference	Conference on Frontiers of Nuclear Structure
Country/Territory	Canada
City	BERKELEY
Period	29/07/02 → 2/08/02

Keywords

ROTATING NUCLEI
ART.
REGION

Cite this

Gorgen, A., Clark, RM., Fallon, P., Cromaz, M., Deleplanque, MA., Diamond, RM., Lane, GJ., Lee, IY., Macchiavelli, AO., Ramos, RG., Stephens, FS., Svensson, CE., Vetter, K., Ward, D., Carpenters, MP., Janssens, RVF., & Wadsworth, R. (2003). Very extended shapes in Cd-108: Evidence for the occupation of "hyper-intruder" orbitals. In P. Fallon, & R. Clark (Eds.), FRONTIERS OF NUCLEAR STRUCTURE (pp. 17-24). (AIP CONFERENCE PROCEEDINGS; Vol. 656). American Institute of Physics.

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title = "Very extended shapes in Cd-108: Evidence for the occupation of {"}hyper-intruder{"} orbitals",

abstract = "High-spin states in Cd-108 were studied following the reaction Ni-64(Ca-48,4n) at abeam energy of 207 MeV Gamma rays were detected using the Gammasphere array. Two rotational bands have been observed at very high angular momentum. Measurements of fractional Doppler shifts yielded lower limits for the quadrupole moments and showed that the observed structures are at least as deformed as the superdeformed structures e.g. in the A approximate to 150 region, and possibly exceed a 2:1 axis ratio. The existence of very extended shapes has been predicted by cranked Strutinsky calculations, and recent projected shell model calculations suggest that the pii(13/2) hyper-intruder orbital is occupied in these newly observed bands.",

keywords = "ROTATING NUCLEI, ART., REGION",

author = "A Gorgen and RM Clark and P Fallon and M Cromaz and MA Deleplanque and RM Diamond and GJ Lane and IY Lee and AO Macchiavelli and RG Ramos and FS Stephens and CE Svensson and K Vetter and D Ward and MP Carpenters and RVF Janssens and R Wadsworth",

year = "2003",

language = "English",

isbn = "0-7354-0116-0",

series = "AIP CONFERENCE PROCEEDINGS",

publisher = "American Institute of Physics",

pages = "17--24",

editor = "P Fallon and R Clark",

booktitle = "FRONTIERS OF NUCLEAR STRUCTURE",

address = "United States",

note = "Conference on Frontiers of Nuclear Structure ; Conference date: 29-07-2002 Through 02-08-2002",

}

Gorgen, A, Clark, RM, Fallon, P, Cromaz, M, Deleplanque, MA, Diamond, RM, Lane, GJ, Lee, IY, Macchiavelli, AO, Ramos, RG, Stephens, FS, Svensson, CE, Vetter, K, Ward, D, Carpenters, MP, Janssens, RVF & Wadsworth, R 2003, Very extended shapes in Cd-108: Evidence for the occupation of "hyper-intruder" orbitals. in P Fallon & R Clark (eds), FRONTIERS OF NUCLEAR STRUCTURE. AIP CONFERENCE PROCEEDINGS, vol. 656, American Institute of Physics, MELVILLE, pp. 17-24, Conference on Frontiers of Nuclear Structure, BERKELEY, Canada, 29/07/02.

Very extended shapes in Cd-108: Evidence for the occupation of "hyper-intruder" orbitals. / Gorgen, A; Clark, RM; Fallon, P et al.
FRONTIERS OF NUCLEAR STRUCTURE. ed. / P Fallon; R Clark. MELVILLE: American Institute of Physics, 2003. p. 17-24 (AIP CONFERENCE PROCEEDINGS; Vol. 656).

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

TY - GEN

T1 - Very extended shapes in Cd-108: Evidence for the occupation of "hyper-intruder" orbitals

AU - Gorgen, A

AU - Clark, RM

AU - Fallon, P

AU - Cromaz, M

AU - Deleplanque, MA

AU - Diamond, RM

AU - Lane, GJ

AU - Lee, IY

AU - Macchiavelli, AO

AU - Ramos, RG

AU - Stephens, FS

AU - Svensson, CE

AU - Vetter, K

AU - Ward, D

AU - Carpenters, MP

AU - Janssens, RVF

AU - Wadsworth, R

PY - 2003

Y1 - 2003

N2 - High-spin states in Cd-108 were studied following the reaction Ni-64(Ca-48,4n) at abeam energy of 207 MeV Gamma rays were detected using the Gammasphere array. Two rotational bands have been observed at very high angular momentum. Measurements of fractional Doppler shifts yielded lower limits for the quadrupole moments and showed that the observed structures are at least as deformed as the superdeformed structures e.g. in the A approximate to 150 region, and possibly exceed a 2:1 axis ratio. The existence of very extended shapes has been predicted by cranked Strutinsky calculations, and recent projected shell model calculations suggest that the pii(13/2) hyper-intruder orbital is occupied in these newly observed bands.

AB - High-spin states in Cd-108 were studied following the reaction Ni-64(Ca-48,4n) at abeam energy of 207 MeV Gamma rays were detected using the Gammasphere array. Two rotational bands have been observed at very high angular momentum. Measurements of fractional Doppler shifts yielded lower limits for the quadrupole moments and showed that the observed structures are at least as deformed as the superdeformed structures e.g. in the A approximate to 150 region, and possibly exceed a 2:1 axis ratio. The existence of very extended shapes has been predicted by cranked Strutinsky calculations, and recent projected shell model calculations suggest that the pii(13/2) hyper-intruder orbital is occupied in these newly observed bands.

KW - ROTATING NUCLEI

KW - ART.

KW - REGION

M3 - Conference contribution

SN - 0-7354-0116-0

T3 - AIP CONFERENCE PROCEEDINGS

SP - 17

EP - 24

BT - FRONTIERS OF NUCLEAR STRUCTURE

A2 - Fallon, P

A2 - Clark, R

PB - American Institute of Physics

CY - MELVILLE

T2 - Conference on Frontiers of Nuclear Structure

Y2 - 29 July 2002 through 2 August 2002

ER -