Author: Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Competing Structures in Nuclei Near Closed Shells
Author: Competing Structures in Nuclei Near Closed Shells. Final Report, September 1, 1993--November 30, 1996
Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 23
Book Description
This report summarizes the progress made during this period. A series of experiments on levels in 144Nd have led to the identification of quadrupole-octupole coupled states in the nucleus. These experiments included the measurement of excited level lifetimes using the GRID technique, the measurement of transition conversion coefficients and the measurement of weak transition intensities. A fast electronic timing system has been set-up at Tennessee Tech. This system can be used to measure nuclear excited state lifetimes in the range from 5 ps upward. A new variation of the centroid shift method has been developed which eliminates the need to determine a prompt position. This centroid difference method employs both forward and reverse gating of gamma cascades to generate two timing spectra.
Competing Structures in Nuclei Near Closed Shells. Annual Report, September 1, 1995 - July 10, 1996
Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 12
Book Description
Progress is reported for GRID lifetime measurements in 144Nd, testing of BaF2 fast timing system, centroid difference techniques for timing circuits.
Competing Structures in Nuclei Near Closed Shells. Progress Report on Research in Nuclear Physics, September 1, 1993--July 31, 1994
Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 9
Book Description
This report covers the following topics: GRID lifetime measurements in neodymium 144; fast electronic timing system; and massive neutrino searches.
On Closed Shells in Nuclei
Author: Maria Goeppert MayerPublisher:
ISBN:
Category : Heavy elements
Languages : en
Pages : 8
Book Description
It has been suggested in the past that special numbers of neutrons or protons in the nucleus form a particularly stable configuration.p1s The complete evidence for this has never been summarized, nor is it generally recognized how convincing this evidence is. That 20 neutrons or protons (Ca{sup40}) form a closed shell is predicted by the Hartree model. A number of calculations support this fact.p2s These considerations will not be repeated here. In this paper, the experimental facts indicating a particular stability of shells of 50 and 82 protons and of 50, 82, and 126 neutrons will be listed.
On Closed Shells in Nuclei. II
Author: M. G. MayerPublisher:
ISBN:
Category : Energy levels (Quantum mechanics)
Languages : en
Pages : 12
Book Description
Scientific and Technical Aerospace Reports
Author: On Closed Shells in Nuclei
Author: Maria Goeppert MayerPublisher:
ISBN:
Category : Neutrons
Languages : en
Pages : 7
Book Description
Shell Structure and Evolution of Collectivity in Nuclei
Author: Ritesh KshetriPublisher: LAP Lambert Academic Publishing
ISBN: 9783659214172
Category :
Languages : en
Pages : 184
Book Description
We have studied two regions of doubly closed shell nuclei over the nuclear chart: stable nuclei with N Z around 40Ca and highly neutron-rich ones close to drip-line above the 132Sn shell closure. Both experimental and theoretical works have been performed for each of these mass regions. The experimental part includes three works: (i) high energy characterization of the Compton suppressed Clover detector, (ii) In-beam gamma-ray spectroscopic studies of high spin states of 35Cl in mass 40 region and (iii) X- and gamma- ray spectroscopic studies of fission fragments of 252Cf spontaneous fission source in mass 132Sn region. The theoretical study supplemented the experimental findings using the microscopic Shell model and the phenomenological Particle Rotor model. Our work emphasizes that the issues thought to be relevant for nuclei away from stability, should also be studied over a broader region of nuclear territory. With the latest developments in the experimental facilities, the nuclei near the stability line should be re-investigated for finding possible correlations with those away from stability.
Physics Of Unstable Nuclei - Proceedings Of The International Symposium On The Ispun07
Author: Dao Tien KhaoPublisher: World Scientific
ISBN: 9814472484
Category : Science
Languages : en
Pages : 554
Book Description
This volume features contributions by the leading authorities on the physics of unstable nuclei. It provides an important updated source in the nuclear physics literature for the researchers and post-graduates studying nuclear physics with unstable beams around the world. The focus is on the new experimental facilities for the production of unstable beams and on the latest developments in microscopic theories of nuclear structure and reactions.