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91.
K. Okano A. Taniguchi S. Yamada T. Sharshar M. Shibata K. Yamauchi 《Zeitschrift für Physik A Hadrons and Nuclei》1995,352(3):243-244
The -decay of150La, the heaviest isotope of lanthanum, has been identified by observing -rays from mass separated activities obtained at KUR-ISOL. From the decay curves of 97.0 and 208.7 keV -rays in150Ce and of Ce-K X-ray, the half-life of150La has been determined as 0.51(3) s. This value is in agreement with theoretical predictions from microscopic theory. 相似文献
92.
V. N. Fedoseyev Y. Jading O. C. Jonsson R. Kirchner K. -L. Kratz M. Krieg E. Kugler J. Lettry T. Mehren V. I. Mishin H. L. Ravn T. Rauscher F. Scheerer O. Tengblad P. Van Duppen A. Wöhr 《Zeitschrift für Physik A Hadrons and Nuclei》1995,353(1):9-10
The continuum part of the6Li (a,a)6Li (1.47–2.47 MeV) scattering data at Ea=50 MeV are extracted in two discretized bins. Coupled-channel calculations are carried out coupling the 1+ ground state of6Li with both the resonant, 3+
1 state, and two non-resonant continuum states. The discretized continuum of the6Li (p,p)6Li (1.75–3.25 MeV) scattering data at Ep=65 MeV are also analysed on the same footing. In both the cases the effect of coupling is found to be minimal. 相似文献
93.
M. Daszewski Z. Janas W. Kurcewicz B. Szweryn 《Zeitschrift für Physik A Hadrons and Nuclei》1995,351(2):225-228
The internal bremsstrahlung spectrum of55Fe was studied using HPGe detector in low background and reduced pileup conditions. The data show that the conclusion on the presence of a heavy mass neutrino strongly depends from the experimental decay energy value taken in the analysis. The decay energy was found to beQ
EC
=231.37 ± 0.10 keV. The obtained results also show the need for the higher accuracyQ
EC
used in the analysis of the existence of a 17-keV neutrino in the55Fe decay.The authors would like to thank A. Plochocki and J. ylicz for helpful discussion and assistance. 相似文献
94.
Fission fluctuation-dissipation dynamics of heavy nuclei has been studied using Langevin Monte Carlo simulations. The covariant form of the fission transport equation and the coefficients related to it are investigated. To learn about the influence of the dynamics from the ground state to the saddle point on the kinetic energy distributions we have studied various systems and compared the calculations both starting from the ground state and from the saddle point. Both the mean total kinetic energy of the fission fragments and its variances can fit with the experimental values in terms of a finite neck radius as scission condition.This work was supported by the National Natural Science Foundation of China. 相似文献
95.
T. Kubo M. Belkacem V. Latora A. Bonasera 《Zeitschrift für Physik A Hadrons and Nuclei》1995,352(2):145-148
Intermittent behaviour of fragment multiplicity distributions in the nuclear liquid-gas phase transition is studied in terms of the droplet model of Fisher. The anomalous fractal dimensions are compared with data on heavy ion reactions and classical molecular dynamics simulations. A signature of the transition in the anomalous fractal dimensions is shown.We thank Profs. S. Ayik, M. Di Toro and V. Kondratyev for discussions. One of us (T.K.) acknowledges the support of INFN-LNS. 相似文献
96.
A. Scherdin A. Schäfer W. Greiner G. Soff P. J. Mohr 《Zeitschrift für Physik A Hadrons and Nuclei》1995,352(3):273-277
The emission of high-energy-rays in the deexcitation of hot40Ca and39K nuclei formed in heavy-ion fusion reactions at excitation energyE
x 90 MeV has been studied. The high energy-rays were measured in coincidence with evaporation residues or light charged particles. The spectrum from the self-conjugated compound nucleus40Ca shows an appreciable yield suppression in the Giant Dipole Resonance (GDR) energy region with respect to the39K, due to isospin selection rules in the dipole-decay. The spectral line shapes of the spectra are well reproduced by using a statistical code which treats explicitly the isospin quantum number in evaluating level densities and transmission coefficients. The GDR parameters determined from the present coincidence measurements are in good agreement with the systematic in theA 40 mass region at lower bombarding energy based on the analysis of inclusive spectra.We thank M. Caldogno for technical support in the development of evaporation residues detectors. We acknowledge the participation of M. Anghinolfi, P. Corvisiero, M. Taiuti and A. Zucchiatti in the early stages of this work. Thanks are due to M. Kicinska-Habior for providing the isospin-dependent code. Discussions with B. Fornal are also gratefully acknowledged. 相似文献
97.
R. P. Hallett K. G. McKay S. P. Balm A. W. Allaf H. W. Kroto A. J. Stace 《Zeitschrift für Physik D Atoms, Molecules and Clusters》1995,34(1):65-70
Reaction studies of carbon clustersC
n
in the rangen=8–37, produced by laser vaporisation in a supersonic nozzle, have been investigated using time-of-flight mass spectrometry. Clear differences in reaction products formed on hydrogenation are detected which show that even and odd clusters behave quite differently and furthermore thatat least two different types of even cluster appear to exist. The reactivity patterns for clusters C
n
withn=16, 18 and 22 are in a different class from those withn=20, 24, 26 ..., a behaviour consistent with the existence of closed cage fullerene structures for even clusters with 20 or more carbon atoms (other thann=22). 相似文献
98.
Suyama Kyozo Fukazawa Yoshitaka Umetsu Yoshiyaki 《Applied biochemistry and biotechnology》1994,(1):871-879
The egg shell membrane (ESM) is an intricate lattice network of stable and water-insoluble fibers with high surface area.
ESM accumulates and eliminates various heavy metal ions from dilute aqueous solution with high affinity and in short contact
time, depending on pH and characteristics of the individual ion. Under certain conditions, the level of precious ions, Au,
Pt, and Pd accumulation approaches 55, 25, and 22% of dry wt of ESM, respectively. Also uranium uptake 30% of that of ESM.
Experiments suggested that ESM is promising to use for the purpose of removal/recovery of metals and water pollution control. 相似文献
99.
Antal Járai 《Aequationes Mathematicae》1994,47(1):69-78
In this work it is proved that under certain conditions the continuous vector-valued solutionsf of the functional equation
相似文献
100.
Elena Romera 《Rendiconti del Circolo Matematico di Palermo》1994,43(1):98-106
The Carleson maximal operator is shown to be bounded inL
p
(w) for certain values ofp and certain radial weightsw when acting on products of radial functions and homogeneous harmonic polynomials.
Partially supported by DGICYT (MEC Spain). PB 92/187. 相似文献
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