| 1. |
- Bark, R A, et al.
(författare)
-
Coexistence of triaxial and prolate shapes in Ir-171
- 1999
-
Ingår i: Nuclear Physics A. - 0375-9474 .- 1873-1554. ; 657:2, s. 113-133
-
Tidskriftsartikel (refereegranskat)abstract
- Excited states in Ir-171 have been observed for the first time. Gamma-rays were assigned to the nucleus by the recoil-decay tagging method, The ground-state band has a structure consistent with an h(11/2) proton coupled to a core of large triaxial deformation. At high spins, a bandcrossing occurs which is interpreted as a change in shape to a prolate deformation, Band-mixing calculations are performed for Ir171-175. These show that shape-coexistence between triaxial and prolate states in these nuclei follows the same systematics found in their Pt and Os neighbours. The systematics are also compared with deformations calculated for Ir171-179 using the code "Ultimate Cranker". Dipole bands were also observed, but tilted axis cranking calculations suggest that they are associated with a collective rotation.
|
|
| 2. |
- King, S L, et al.
(författare)
-
First observation of excited states in the neutron deficient nuclei (PT)-P-168 and Pt-170
- 1998
-
Ingår i: Physics Letters B. - 0370-2693 .- 1873-2445. ; 443:1-4, s. 82-88
-
Tidskriftsartikel (refereegranskat)abstract
- Excited states have been observed for the first time in (XPt)-X-168 and Pt-170 using the alpha-decay recoil-tagging technique. The trend of decreasing deformation moving away from the N = 104 mid-shell continues far Pt-170 but the structure of Pt-168 is significantly different. The low spin level energy systematics in Pt168-184 are presented and discussed within the framework of the interacting boson model. (C) 1998 Elsevier Science B.V. All rights reserved.
|
|
| 3. |
- Bark, R A, et al.
(författare)
-
Bandcrossings in Os-171
- 1999
-
Ingår i: Nuclear Physics A. - 0375-9474 .- 1873-1554. ; 646:4, s. 399-413
-
Tidskriftsartikel (refereegranskat)abstract
- The nucleus Os-171 has been populated using the reaction Sn-116(Ni-58,2pn). Four new bands are identified, and the previously known bands are extended in spin, to a maximum of 53/2 (h) over bar. One- and three-quasiparticle configurations are identified, and beta, gamma, and octupole configurations are assigned tentatively. The effects of a possible intruder configuration on the negative parity bands are tested using band-mixing calculations.
|
|
| 4. |
|
|
| 5. |
- Cederwall, Bo, et al.
(författare)
-
Collective rotational-vibrational transition in the very neutron-deficient nuclei (171,172)-Pt
- 1998
-
Ingår i: Physics Letters B. - AMSTERDAM, NETHERLANDS : ELSEVIER SCIENCE. - 0370-2693 .- 1873-2445. ; 443:1-4, s. 69-76
-
Tidskriftsartikel (refereegranskat)abstract
- Excited states have been identified for the first time in very neutron deficient Pt-171.172 nuclei using the recoil-or-decay tagging technique. The ground-state band in Pt-172 has been established up to I-pi = 8+. A similar level sequence, presumably built on the I-pi = 13/2(+) state, is observed for Pt-171. The data are compared with theoretical calculations based on the mean field approach and the random phase approximation and are put into the context of the systematics of platinum isotopes. (C) 1998 Elsevier Science B.V. All rights reserved.
|
|
| 6. |
|
|
| 7. |
|
|
| 8. |
- Juutinen, S, et al.
(författare)
-
Band structures in Ba-132
- 1995
-
Ingår i: PHYSICAL REVIEW C-NUCLEAR PHYSICS. - : AMER INST PHYSICS. ; 52:6, s. 2946-2954
-
Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- Excited states of Ba-132 were studied in an experiment utilizing the Sn-124(C-13,5n) reaction at a beam energy of 65.5 MeV. The level scheme of Ba-132 was considerably extended from what was previously known. Evidence is presented for neutron h(11/2) alig
|
|
| 9. |
|
|
| 10. |
|
|
