| 1. |
- Axelsson, A, et al.
(författare)
-
Excited superdeformed band in Eu-143
- 1999
-
Ingår i: European Physical Journal A. - : Springer Science and Business Media LLC. - 1434-6001 .- 1434-601X. ; 6:2, s. 175-183
-
Tidskriftsartikel (refereegranskat)abstract
- A new superdeformed band has been discovered in a EUROBALL experiment and assigned to Eu-143. It has a maximum intensity of 35% of the Eu-143 yrast superdeformed band and the transition energies of the two bands are very similar. Based on comparison with cranked shell model calculations the new band is tentatively assigned the high-N intruder configuration pi 6(2)nu 7(0) and the parity and signature quantum numbers (pi, alpha) = (-1, +1/2). In addition to the already known high-energy transition at 3361 keV another discrete line at 2715 keV was found to be in coincidence with the yrast superdeformed band. However, it was not possible to connect the decay out of either of the superdeformed bands to, known normally deformed states.
|
|
| 2. |
- Axelsson, A, et al.
(författare)
-
Excited superdeformed band in Eu-143
- 1999
-
Ingår i: EUROPEAN PHYSICAL JOURNAL A. - : SPRINGER VERLAG. - 1434-6001. ; 6:2, s. 175-183
-
Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- A new superdeformed band has been discovered in a EUROBALL experiment and assigned to Eu-143. It has a maximum intensity of 35% of the Eu-143 yrast superdeformed band and the transition energies of the two bands are very similar. Based on comparison with
|
|
| 3. |
|
|
| 4. |
|
|
| 5. |
|
|
| 6. |
- Schnack-Petersen, H, et al.
(författare)
-
Superdeformed triaxial bands in Lu-163,165
- 1995
-
Ingår i: Nuclear Physics A. - : Elsevier BV. - 0375-9474. ; 594:2, s. 175-202
-
Tidskriftsartikel (refereegranskat)abstract
- An experimental investigation of the nucleus 165Lu, using the reactions 138Ba(31P,4n) 165Lu and 150Sm(19F,4n) 165Lu at beam energies of E = 155 and 95 MeV, respectively, has been performed. Among other additions to the existing level scheme, a new band, with transition energies almost identical to a strongly deformed (β2 0.42) πi13/2[660 1/2+] band recently discovered in 163Lu has been established. A theoretical analysis of the structure of the two Lu isotopes, 165Lu and 163Lu is carried out by detailed calculations of total potential energy surfaces for specific configurations. By a diabatic treatment of crossings specific proton configurations as πi13/2[660 1/2+] are identified throughout the deformation space and as a function of spin. It is found as a general feature that well deformed local minima of considerable nonaxial symmetry coexist with a normal deformed global minimum. The depth of these local minima depend on configuration. The structure of the different global and local minima found in these surfaces are analysed and discussed in terms of occupation of available basis configurations and their orientation relative to the rotation axis. The strongly deformed minima are found to belong to a group of superdeformed triaxial structures, expected to appear at low energies for certain favourable combinations of proton and neutron numbers.
|
|
| 7. |
- Tveter, TS, et al.
(författare)
-
Collective dipole motion in highly excited (272)Hs (Z=108) nuclei
- 1996
-
Ingår i: PHYSICAL REVIEW LETTERS. - : AMER INST PHYSICS. - 0031-9007. ; 76:7, s. 1035-1038
-
Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- The heavy nucleus (272)(108)Hs (Z = 108) and its evaporation daughters were produced using the reaction Th-232(Ar-40, gamma xn) with beam energies 10.5 and 15.0 MeV/A. The giant dipole resonance gamma radiation from the hot composite system prior to fissi
|
|
| 8. |
- Atac, A, et al.
(författare)
-
Single-step link of the superdeformed band in Eu-143
- 1996
-
Ingår i: ZEITSCHRIFT FUR PHYSIK A-HADRONS AND NUCLEI. - : SPRINGER VERLAG. - 0939-7922. ; 355:4, s. 343-344
-
Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- A discrete gamma-ray transition with an energy of 3360.6 keV deexciting the second lowest SD state in Eu-143 has been discovered. It carries 3.2 % of the full intensity of the band and feeds into a nearly spherical state which is above the I = 35/2((+)),
|
|
| 9. |
- Axelsson, A, et al.
(författare)
-
Single-step link from yrast SD band in Eu-143
- 1997
-
Ingår i: PROGRESS IN PARTICLE AND NUCLEAR PHYSICS. - : PERGAMON PRESS LTD. - 0146-6410. ; 38, s. 51-52
-
Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- A discrete gamma-ray transition from the yrast SD band to the region of near-yrast discrete normal-deformed states has been identified in Eu-143. It has an energy of 3360.6 keV and an intensity corresponding to 3.2% of the full intensity of the SD band an
|
|
| 10. |
- Bracco, A, et al.
(författare)
-
The giant dipole resonance in the superdeformed Eu-143 nucleus
- 1997
-
Ingår i: ACTA PHYSICA HUNGARICA NEW SERIES-HEAVY ION PHYSICS. - : AKADEMIAI KIADO. - 1219-7580. ; 6:1-4, s. 83-93
-
Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- The gamma-decay of the Giant Dipole Resonance (GDR) built on excited nuclear states has been measured for the nucleus Eu-143. The reaction Pd-110(Cl-37, 4n)Eu-143 at a beam energy of 165 MeV has been employed. This experiment aimed at searching the gamma-
|
|
| 11. |
- Camera, F, et al.
(författare)
-
GDR in superdeformed nuclei
- 1997
-
Ingår i: ACTA PHYSICA POLONICA B. - : ACTA PHYSICA POLONICA B, JAGELLONIAN UNIV, INST PHYSICS. - 0587-4254. ; 28:1-2, s. 207-217
-
Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- A search for the gamma decay of the Giant Dipole Resonance built on superdeformed nuclear configurations was made. The superdeformed states of the Eu-143 nucleus were populated using the reaction Pd-110(Cl-37, 4n)Eu-143 at a beam energy of 165 MeV. High e
|
|
| 12. |
- Camera, F, et al.
(författare)
-
The gamma-decay of the GDR built on superdeformed states in Eu-143
- 1998
-
Ingår i: EUROPEAN PHYSICAL JOURNAL A. - : SPRINGER VERLAG. - 1434-6001. ; 2:1, s. 1-2
-
Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- A search for the gamma decay of the Giant Dipole Resonance built on superdeformed (SD) nuclear configurations of (EU)-E-143 was made, using the reaction Pd-110(Cl-37,4n)Eu-143 at 165 MeV. Eight large BaF2 scintillators and the NORDBALL array were used to
|
|
| 13. |
|
|
| 14. |
|
|
| 15. |
- Leoni, S, et al.
(författare)
-
Four independent decay properties in the super-deformed well of Eu-143
- 1997
-
Ingår i: PHYSICS LETTERS B. - : ELSEVIER SCIENCE BV. - 0370-2693. ; 409:1-4, s. 71-76
-
Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- The flow of gamma-transitions through the superdeformed minimum of Eu-143 is investigated by studying the intensities of four different types of gamma-rays of superdeformed origin, obtained with a variety of gating conditions. They can all be explained ra
|
|
| 16. |
|
|
| 17. |
- Leoni, S, et al.
(författare)
-
Observation of an intense quasicontinuum of superdeformed rotational transitions in Eu-143
- 1996
-
Ingår i: PHYSICAL REVIEW LETTERS. - : AMER INST PHYSICS. - 0031-9007. ; 76:18, s. 3281-3284
-
Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- Quasicontinuum spectra in coincidence with transitions belonging to the different potential wells of Eu-143, studied with increasing number of coincidence folds. An intense bump of rotationally correlated transitions is observed to develop in the high spi
|
|
| 18. |
- Maj, A, et al.
(författare)
-
Array of anti-compton spectrometers as a trigger in GDR studies
- 1996
-
Ingår i: ACTA PHYSICA POLONICA B. - : POLISH ACAD SCIENCES INST PHYSICS. - 0587-4254. ; 27:1-2, s. 541-546
-
Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- Preliminary results of experiments combining an array of large BaF2 detectors for high energy gamma-rays with an array of 17 Anti-Compton spectrometers are presented. The correlation between excited state giant dipole resonances and discrete line structur
|
|
| 19. |
- Piiparinen, M, et al.
(författare)
-
High-spin spectroscopy of the Eu-142, Eu-143 and Eu-144 nuclei
- 1996
-
Ingår i: NUCLEAR PHYSICS A. - : ELSEVIER SCIENCE BV. - 0375-9474. ; 605:2, s. 191-268
-
Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- High-spin level schemes of the Eu-142, Eu-143 and Eu-144 nuclei have been investigated by in-beam gamma-ray spectroscopic methods using the NORDBALL Compton-suppressed multi-detector array. The previously known schemes have been extended to considerably h
|
|
