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61.
L-L. Andersson D. Rudolph J. Ekman C. Fahlander E. K. Johansson R. du Rietz C. J. Gross P. A. Hausladen D. C. Radford G. Hammond 《The European Physical Journal A - Hadrons and Nuclei》2006,30(2):381-390
The 61
30Zn31 isotope has been produced at the Oak Ridge National Laboratory in the fusion-evaporation reaction 40Ca(24Mg, 2pn)61Zn at 104MeV. The experimental set-up allowed γ-rays to be detected in the CLARION Ge detector array in coincidence with the
detection of recoiling nuclei in the focal plane at the end of the recoil mass spectrometer. This provides a unique identification
of γ-rays belonging to 61Zn. The excited states have been explored by means of recoil- γγ coincidences, and the resulting decay scheme comprises almost
70 transitions. The data reveal numerous non-yrast states and suggest a revised spin and parity assignment for a previously
observed superdeformed band. The resulting decay scheme is compared to predictions from different sets of large-scale shell
model calculations. 相似文献
62.
63.
A. T. Aldred P. deV. du Plessis G. H. Lander 《Journal of magnetism and magnetic materials》1980,20(3):236-242
Neutron and magnetization experiments have been used to determine the critical exponents β, γ and δ of the ferromagnet UTe, Tc = 100.7(3) K, near the Curie temperature. The values are β = 0.291(4), γ = 1.326(9) and δ = 5.23(7). Comparisons are made with values from other ferromagnetic systems. 相似文献
64.
Chr v. Faber du Faur K. H. Lindenberger 《Zeitschrift für Physik A Hadrons and Nuclei》1962,169(2):286-288
For the halflife of the 1,49 MeV state in Co57 an upper limit of 3,0 × 10?10 sec. has been found. 相似文献
65.
K. Siwek-Wilczynska E.H.du Marchie van Voorthuysen J. van Popta R.H. Siemssen J. Wilczynski 《Nuclear Physics A》1979,330(1):150-172
The mechanism of the production of fast α-particles in 12C induced reactions was studied over a wide range of bombarding energies (7.5–16.7 MeV/A) by measuring α-γ coincidences. Absolute cross sections for reactions, as well as inclusive α-particle production cross sections, have been determined. Depending on the bombarding energy, a fraction of 0.2–0.4 of the singles α-particles can be explained as resulting from incomplete fusion reactions (12C, α) and (12C, 2α) which correspond to a capture of “8Be” and “4He”, respectively. The remaining fragments of the projectile have, on the average, the beam-velocity energies and their angular distributions are forward peaked. Distributions of side-feeding to the yrast bands in the target-residue nuclei indicate that low partial waves are strongly hindered in the incomplete fusion reactions. The energy dependence of the cross sections for (12C, α) and (12C, 2α) incomplete fusion as well as for (12C, 3α) projectile breakup is given. A generalized concept of critical angular momentum which explains a competition between complete fusion, incomplete fusion and breakup reactions is proposed. 相似文献
66.
G.P. Felcher G.H. Lander P. de V. du Plessis O. Vogt 《Solid State Communications》1979,32(12):1181-1184
Magnetization experiments have shown that at low temperature and in an applied magnetic field of ~90 kOe antiferromagnetic (AF) uranium arsenide transforms to a new ferrimagnetic state. The high-field transition produces a state with magnetic components to the applied field. A small ferromagnetic component (0.4 μB) is seen in magnetization experiments but with neutron diffraction we have observed directly the large AF component (~ 1.8 μB) which has a value of 0.58 ± 0.01 1 in contrast to the zero field type IA structure with . This transition is quite different from that occuring in the conventional spin-flop transition. 相似文献
67.
68.
Bhatt AI du Fou de Kerdaniel E Kinoshita H Livens FR May I Polovov IB Sharrad CA Volkovich VA Charnock JM Lewin RG 《Inorganic chemistry》2005,44(1):2-4
In situ EXAFS spectroscopic studies of uranium compounds in high temperature alkali chloride melts indicate the presence of oligomeric species. An investigation into UCl(3) and UCl(4) dissolved in LiCl reveals long range ordering of uranium atoms in the molten state which is not maintained on quenching. Studies of uranium dioxide dissolved in LiCl-KCl eutectic with HCl exhibit long range ordering in both molten and quenched states, and the EXAFS data can be modeled using multiple coordination shells. 相似文献
69.
70.