Evidence of antimagnetic rotation in odd-A {sup 105}Cd

Journal Article · Wed Dec 15 04:00:00 EST 2010 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.82.061308· OSTI ID:21499246

Choudhury, Deepika; Jain, A K; Patial, M; Gupta, N; Arumugam, P ^[1]; Dhal, A ^[2]; Sinha, R K ^[2]; Chaturvedi, L ^[3]; Joshi, P K; Trivedi, T; Palit, R ^[4]; Kumar, S; Garg, R; Mandal, S ^[5]; Negi, D; Mohanto, G; Muralithar, S; Singh, R P; Madhavan, N; Bhowmik, R K ^[6]

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1. Department of Physics, Indian Institute of Technology, Roorkee 247667 (India)
2. Department of Physics, Banaras Hindu University, Varanasi 221005 (India)
3. Department of Pure and Applied Physics, Guru Ghasidas University, Bilaspur 495009 (India)
4. Department of Nuclear and Atomic Physics, Tata Institute of Fundamental Research, Mumbai 400085 (India)
5. Department of Physics and Astrophysics, University of Delhi, Delhi 110007 (India)
6. Inter University Accelerator Center, New Delhi 110067 (India)

The lifetimes of the levels above spin 23/2{sup -} in the negative-parity yrast band of {sup 105}Cd have been measured using the Doppler shift attenuation method. The obtained B(E2) values are small and show a decrease with an increase in spin. This establishes, for the first time, antimagnetic rotation (AMR) in an odd-A nucleus. An excellent agreement between the theoretical (semiclassical model) and experimental results along with a large I{sup (2)}/B(E2) ratio for the states strongly suggests that the structure of the levels beyond spin 23/2{sup -} has the character of a twin-shears type AMR band resulting from the coupling of a pair of g{sub 9/2} proton holes with aligned h{sub 11/2} and (g{sub 7/2}){sup 2} neutron particles, along with a small contribution from the core rotation.

• OSTI ID: 21499246
• Journal Information: Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 6 Vol. 82; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANGULAR MOMENTUM
APPROXIMATIONS
BARYONS
BETA DECAY RADIOISOTOPES
BETA-PLUS DECAY RADIOISOTOPES
CADMIUM 105
CADMIUM ISOTOPES
CALCULATION METHODS
COUNTING TECHNIQUES
COUPLING
DSA METHOD
ELECTRON CAPTURE RADIOISOTOPES
ELEMENTARY PARTICLES
ENERGY LEVELS
EVEN-ODD NUCLEI
FERMIONS
HADRONS
INTERMEDIATE MASS NUCLEI
ISOTOPES
LIFETIME
MINUTES LIVING RADIOISOTOPES
MOTION
NEUTRONS
NUCLEI
NUCLEONS
PARITY
PARTICLE PROPERTIES
PROTONS
RADIOISOTOPES
ROTATION
SEMICLASSICAL APPROXIMATION
SPIN
YRAST STATES