Intruder features in the island of inversion: The case of Mg-33
(2001) In Physical Review C - Nuclear Physics 64(5).- Abstract
- The Na-33 beta decay was studied online using mass separation techniques and a first description of the level structure of the neutron-rich isotope Mg-33, with N=21, has been obtained. The experiment involved the measurement of beta-gamma, beta-gamma-gamma, and beta -n-gamma coincidences as well as neutron spectra by time-of-flight technique. The first low energy level scheme for the daughter nucleus Mg-33 is given with five bound states. Spin and parity assignments are proposed according to beta feedings and gamma -ray multipolarities, beta -strength distribution is evaluated, taking into account 1n- and 2n-emission channels and it is compared with the calculated GT strength distribution. In particular, the 1p-1h and 2p-2h excitations are... (More)
- The Na-33 beta decay was studied online using mass separation techniques and a first description of the level structure of the neutron-rich isotope Mg-33, with N=21, has been obtained. The experiment involved the measurement of beta-gamma, beta-gamma-gamma, and beta -n-gamma coincidences as well as neutron spectra by time-of-flight technique. The first low energy level scheme for the daughter nucleus Mg-33 is given with five bound states. Spin and parity assignments are proposed according to beta feedings and gamma -ray multipolarities, beta -strength distribution is evaluated, taking into account 1n- and 2n-emission channels and it is compared with the calculated GT strength distribution. In particular, the 1p-1h and 2p-2h excitations are shown to result in substantial contribution to the low energy configurations. Allowed beta branch to the (33)Ma g.s. [log ft = 5.27(26)] gives direct evidence for the inversion of nu (f(7/2)) and nu (d(3/2)) states. (Less)
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https://lup.lub.lu.se/record/4281637
- author
- publishing date
- 2001
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Physical Review C - Nuclear Physics
- volume
- 64
- issue
- 5
- article number
- 054313
- publisher
- American Physical Society
- external identifiers
-
- wos:000172077000022
- scopus:14344275142
- ISSN
- 0556-2813
- DOI
- 10.1103/PhysRevC.64.054313
- language
- English
- LU publication?
- no
- id
- ec699f80-a80e-43e8-87e3-7e99198ca8ba (old id 4281637)
- date added to LUP
- 2016-04-01 15:52:23
- date last changed
- 2022-01-28 07:44:08
@article{ec699f80-a80e-43e8-87e3-7e99198ca8ba, abstract = {{The Na-33 beta decay was studied online using mass separation techniques and a first description of the level structure of the neutron-rich isotope Mg-33, with N=21, has been obtained. The experiment involved the measurement of beta-gamma, beta-gamma-gamma, and beta -n-gamma coincidences as well as neutron spectra by time-of-flight technique. The first low energy level scheme for the daughter nucleus Mg-33 is given with five bound states. Spin and parity assignments are proposed according to beta feedings and gamma -ray multipolarities, beta -strength distribution is evaluated, taking into account 1n- and 2n-emission channels and it is compared with the calculated GT strength distribution. In particular, the 1p-1h and 2p-2h excitations are shown to result in substantial contribution to the low energy configurations. Allowed beta branch to the (33)Ma g.s. [log ft = 5.27(26)] gives direct evidence for the inversion of nu (f(7/2)) and nu (d(3/2)) states.}}, author = {{Nummela, S and Nowacki, F and Baumann, P and Caurier, E and Cederkäll, Joakim and Courtin, S and Dessagne, P and Jokinen, A and Knipper, A and Le Scornet, G and Lyapin, LG and Miehe, C and Oinonen, M and Poirier, E and Radivojevic, Z and Ramdhane, M and Trzaska, ZH and Walter, G and Aysto, J}}, issn = {{0556-2813}}, language = {{eng}}, number = {{5}}, publisher = {{American Physical Society}}, series = {{Physical Review C - Nuclear Physics}}, title = {{Intruder features in the island of inversion: The case of Mg-33}}, url = {{http://dx.doi.org/10.1103/PhysRevC.64.054313}}, doi = {{10.1103/PhysRevC.64.054313}}, volume = {{64}}, year = {{2001}}, }