共查询到20条相似文献,搜索用时 0 毫秒
1.
U. Neuneyer H. Wolters A. Dewald W. Lieberz A. Gelberg E. Ott J. Theuerkauf R. Wirowski P. von Brentano K. Schiffer D. Alber K. H. Maier 《Zeitschrift für Physik A Hadrons and Nuclei》1990,336(2):245-246
High spin states of 128 Ba have been investigated via the 96 Zr (36 S, 4n)reaction at 150Me V beam energy using the Osiris anti- compton spectrometer. 14new levels and 23new transitions up to a maximum spin of 34? could be placed in the levelscheme. 相似文献
2.
O. Vogel R.S. Chakrawarthy A. Dewald P. Petkov K. Jessen J. Gableske P. von Brentano D. Bazzacco A. Gizon J. Gizon S. Lunardi D.R. Napoli P. Pavan C. Rossi Alvarez I. Wiedenhöver 《The European Physical Journal A - Hadrons and Nuclei》1999,4(4):323-325
High spin states in 128Ba have been investigated with the fusion–evaporation reaction 96Zr(36S,4n)128Ba at a beam energy of 150 MeV with the GASP-spectrometer at INFN in Legnaro, Italy. The level scheme could be extended to
higher spins and six-quasiparticle states have been observed. The deduced alignments are compared to the predictions of previously
reported cranked shell model calculations.
Received: 4 January 1999 相似文献
3.
B. Cederwall A. Johnson R. Wyss F. Lidén B. Fant S. Juutinen P. Ahonen S. Mitarai J. Mukai J. Nyberg 《Zeitschrift für Physik A Hadrons and Nuclei》1991,338(4):461-462
The very neutron deficient nucleus120Ba has been investigated in a high-spin γ-spectroscopic study. The yrast band of120Ba is extended up to spin 22? and one tentatively assigned negative-parity side band is observed up to spin 15?. The experimental results are compared with Total Routhian Surface calculations. 相似文献
4.
K. Schiffer A. Dewald A. Gelberg R. Reinhardt K. O. Zell P. von Brentano Sun Xiangfu 《Zeitschrift für Physik A Hadrons and Nuclei》1983,311(3):245-246
A group of proton emitters of Au, Ir, Re, Ta has been identified by means of mass values derived from the experimental data. The proton drip line has been determined. It is shown that on the boundary of the proton stability the values of proton pairing energies increase by about 50% as compared with the isotone nuclei near the betastability line. 相似文献
5.
The 124Ba nucleus is investigated on the basis of the method of statistical mechanics by assuming the nucleons to move in triaxially
deformed Nilsson potential. The variation in the Fermi energies of protons and neutrons is studied as a function of spin and
temperature. The Fermi energies determined as a function of angular momentum is used to study the dependence of shell correction
on angular momentum using the Strutinsky smoothing procedure. The most important observation is that the shell correction
is almost the same for all spins for 124Ba. The spin cutoff parameter and the single particle level density parameter are studied as a function of spin and temperature.
Constant entropy lines drawn by plotting the excitation energy against angular momentum are found to be roughly at constant
energy above the yrast line and are almost equally spaced. It is observed that no yrast traps are present for 124Ba. 相似文献
6.
I. N. Wischnewski H. V. Klapdor H. Fromm P. Herges 《Zeitschrift für Physik A Hadrons and Nuclei》1981,301(1):29-34
High spin states have been investigated by the reaction90Zr(19F, 3nγ), using an Anticompton spectrometer device, for the nucleus106In, for which no in-beamγ-spectroscopic information was available up to now. A level scheme has been constructed up to anI =(13,14) state. 相似文献
7.
C. Schumacher P. von Brentano A. Dewald M. Eschenauer H. Grawe J. Heese K. H. Maier M. Philipp E. Radermacher R. Schubart O. Stuch J. Theuerkauf D. Weißhaar M. Wilhelm 《Zeitschrift für Physik A Hadrons and Nuclei》1995,351(1):39-41
The level scheme of147Tb has been extended to 116 levels and 198 transitions in two experiments with the OSIRIS Compton suppressed detector array at the HMI Berlin with the reactions122Sn(31P, 6n)147Tb at 160 MeV and120Sn(31P, 4n)147Tb at 152 MeV. Evidence for a new high spin isomer atE=7664.1 keV with a life-time of the order of 2 ns has been found. 相似文献
8.
M. Rejmund K. H. Maier R. Broda M. Lach J. Wrzesiński J. Agramunt J. Blomqvist A. Gadea J. Gerl M. Górska H. Grawe M. Kaspar I. Kozhoukharov I. Peter H. Schaffner R. Schubart Ch. Schlegel G. Stengel S. Wan H. J. Wollersheim 《Zeitschrift für Physik A Hadrons and Nuclei》1997,359(3):243-245
High spin states in nuclei in the 208Pb region were populated in deep inelastic collisions of 136Xe and 208Pb projectiles with thick 208Pb targets at about 50 MeV above the Coulomb barrier. Prompt and prompt-delayed γ-ray coincidences were measured. Four new states above the 8+ isomer in 210Pb were found and spins and parities assigned from theoretical expectations. The results are discussed in the frame of shell model theory. 相似文献
9.
A. Sharma J. Goswamy D. Mehta Jagbir Singh Harjeet Kaur B. Chand N. Singh R. K. Bhowmik P. N. Trehan 《Zeitschrift für Physik A Hadrons and Nuclei》1993,346(4):321-322
The high spin states in116Te were populated in the Ru(19F,p4n) reaction at Elab=90MeV and the subsequent deexcitation was studied using the γ-ray spectroscopic techniques. Ninteen new transitions have been added to extend the level scheme. A ΔI=2 rotational band is identified for the first time in an even-A Tellurium nucleus. 相似文献
10.
C. Foin S. André D. Barnéoud G. Bastin A. Peghaire J. P. Thibaud 《Zeitschrift für Physik A Hadrons and Nuclei》1982,305(1):81-85
High spin states in153Er have been populated in the144Sm(12C, 3n)133Er reaction. Excitation functions, lifetimes, angular distributions,γ-γ coincidences and internal conversion coefficients were measured. Three isomeric states at 2.75 MeV (T 1/2=400 ns), 2.95 MeV (T 1/2~10 ns) and 5.2 MeV (T 1/2=200 ns) have been observed. A fourth isomer seems to be weakly excited above 6.8 MeV. The level scheme proposed is discussed in term of the nuclear shell model. 相似文献
11.
B Mukherjee S Muralithar R P Singh R Kumar K Rani S C Pancholi R K Bhowmik 《Pramana》2000,55(3):L471-L478
Excited states of 63Cu were populated via the 52Cr+10O (65 MeV) reaction using the gamma detector array equipped with charged particle detector array for reaction channel separation.
On the basis of γ-γ coincidence relations and angular distribution ratios, a level scheme was constructed up to E
n=7 MeV and J
π=23/2(+). The decay scheme deduced was interpreted in terms of shell model calculations, with a restricted basis of the f
5/2, p
3/2, p
1/2, g
9/2 orbitals outside a 56
28Ni core. 相似文献
12.
C. Schumacher P. von Brentano A. Dewald M. Eschenauer H. Grawe J. Heese K. H. Maier M. Philipp E. Radermacher R. Schubart O. Stuch J. Theuerkauf D. Weil M. Wilhelm K. O. Zell 《Zeitschrift für Physik A Hadrons and Nuclei》1996,354(1):123-124
The data from two experiments with heavy ion induced reactions at the OSIRIS Compton suppressed Ge detector array has been analyzed to study high spin states in145Gd. The level scheme of145Gd has been extended up to an excitation energy of 12 MeV and an estimated spin of 25 ?. No evidence for high spin isomers was found. 相似文献
13.
A. Charvet R. Duffait R. Béraud K. Deneffe A. Emsallem M. Meyer J. Tréherne A. Gizon 《Zeitschrift für Physik A Hadrons and Nuclei》1984,315(2):163-167
High spin states in103Rh have been studied using the100Mo(7Li, 4n) reaction. Standard in-beam measurements involving singlesγ-ray,γ-γ-t coincidences, angular distribution and linear polarization measurements have been performed. A perturbed band based on a 9/2+ state is interpreted as ag 9/2 coupled band. A sequence built on a 1/2? state is related to thep 1/2 state. At higher excitation energy, in the range 2.2–3.7 MeV, the strongΔI=1 cascade observed, connecting negative parity levels, probably arises from states including three quasi-particle configurations. 相似文献
14.
M. Palacz Z. Sujkowski J. Nyberg J. Bacelar J. Jongman W. Urban W. Hesselink J. Nasser A. Plompen R. Wyss 《Zeitschrift für Physik A Hadrons and Nuclei》1991,338(4):467-468
Gamma ray spectra from the117Sn(18O,4n)131 Ce reaction have been studied with the NORDBALL array of 15 Compton-suppressed Ge detectors. States up to I=51/2 , E8 MeV are populated. Observed bands are interpreted in terms of quasiparticle configurations. 相似文献
15.
U. Hermkens F. Becker J. Eberth S. Freund T. Mylaeus S. Skoda W. Teichert A. v. d. Werth 《Zeitschrift für Physik A Hadrons and Nuclei》1992,343(3):371-372
High spin states of66,68Ge have been investigated at the FN Tandem accelerator of the University of Köln via the reactions40Ca(32S,2p,4p)66,68Ge at a beam energy of 100 MeV and58Ni(16O,2p)68Ge at 65 MeV. The OSIRIS spectrometer with 12 escape suppressed Ge detectors was used to measure coincidences and -ray angular distributions. In66Ge (68Ge) 33 (22) new levels were found and 63 (62) new -transitions were placed in the level scheme. Both nuclei show a rather complicated but similar excitation pattern, ruled by the interplay of quasiparticle and collective degrees of freedom. The results are compared to the recently published EXVAM calculations for68Ge.Supported by German BMFT under contract No. 06 OK 143. 相似文献
16.
Jagbir Singh Harjeet Kaur A. Sharma J. Goswamy D. Mehta Nirmal Singh P. N. Trehan E. S. Paul R. K. Bhowmik 《Zeitschrift für Physik A Hadrons and Nuclei》1996,356(1):125-132
High spin states of121Te, populated in the114Cd(11B,p3n) reaction, have been studied throughγ-ray spectroscopy. The level scheme has been established up toJ π=51/2?. Three-quasiparticle states, based on the πg 7/2 2?νh 11/2 andπg 7/2 d 5/2?νh 11/2 configurations, have been identified. A favoured 39/2? state is suggested to be the fully aligned [πg 7/2 2]6+?[νh 11/2 3 27/2? yrast non-collective oblate configuration. This assignment is supported by Total Routhian Surface (TRS) calculations which also suggest a similar oblate assignment to the states atJ π=21/2? and 23/2?. A higher 47/2? state is also found and is suggested to be the fully aligned [πg 7/2 2]6+?[νh 11/2 5]35/2? configuration. 相似文献
17.
M. Behar A. M. J. Ferrero A. Filevich A. O. Macchiavelli 《Zeitschrift für Physik A Hadrons and Nuclei》1985,320(3):467-474
High spin states in97Rh were excited via the96Ru (α,2np) reaction at 45 MeV. As a main finding we have observed a positive parity band, built on the 9/2+ ground state, which depopulated levels at 3,550.7 (25/2+), 3,259.1 (23/2+), 2,895.1 (23/2+), 1,961.3 (19/2+), 1,553.1 (17/2+) and 857.1 (13/2+). Also we have excited levels at 3,055.8 (21/2), 2,225.4 (17/2) and 1,463.5 (15/2), which most likely are negative parity states. 相似文献
18.
A. Sharma J. Goswamy D. Mehta B. Chand N. Singh P. N. Trehan 《Zeitschrift für Physik A Hadrons and Nuclei》1992,344(3):349-350
High spin states in
117Tewere populated following the
108Pd(16O,2p5n)reaction at Elab=84MeV and the subsequent de-excitation was studied using ray spectroscopic techniques. Two new bands consisting of E2 transitions were established upto spins 41/2 and 45/2, above the band built on v[505]11/2–
orbital. Such bands are seen for the first time in the systematics of odd- mass Te- nuclei. 相似文献
19.
A. Sharma J. Singh H. Kaur J. Goswamy D. Mehta N. Singh P. N. Trehan E. S. Paul R. K. Bhowmik 《Zeitschrift für Physik A Hadrons and Nuclei》1996,354(1):347-357
High spin states in116,118Te, populated in102Ru(19F,p 4 n) and110Pd (13C, 5n) reactions, have been studied throughγ-ray spectroscopy. The level schemes have been established up toI?25?. A favouredI π = 16+ state in these nuclei is suggested to be based on the fully alignedπ[(g 7/2)2]6 +?ν[(h 11/2)2]10 + non-collective oblate configuration. This assignment is supported by TRS cranking calculations, which also predict similar non-collective oblate assignment for states at 14?, 19? and 22? in these nuclei. 相似文献
20.
C. -B. Moon S. J. Chae J. C. Kim Y. K. Kim J. U. Kwon C. S. Lee K. Furuno T. Komatsubara T. Hayakawa H. Kimura J. Lu M. Matsuda J. Mukai T. Watanabe 《Zeitschrift für Physik A Hadrons and Nuclei》1994,350(1):1-2
Isotopic ratios were measured for Li, Be and B produced in p+Al, p+Nl and p+Ag reactions. The experimental data were analysed in the framework of the Quantum Statistical Model in order to relate the isotopic yield ratios to the baryonic entropy. 相似文献