Heavy ion clustering aspects and molecular resonances. [Excitation, quasibound states, single-particle effects, fragmentation theory, antisymmetric effects]

Scheid, W; Greiner, W

Title: Heavy ion clustering aspects and molecular resonances. [Excitation, quasibound states, single-particle effects, fragmentation theory, antisymmetric effects]

Full Record
Other Related Research

Abstract

Selected aspects are presented for a theoretical description of molecular resonance phenomena. These are the conditions for the existence of nuclear molecules, calculations of real and imaginary heavy-ion potentials, the excitation mechanism of quasibound molecular resonances and quasimolecular single-particle effects. More-nucleon and cluster transfers between nuclei can be treated in fragmentation theory. Lastly the application of parastatistics to nucleus--nucleus scattering is treated, and yields some new results in connection with the antisymmetrization effects between nuclei. 25 references. (JFP)

Authors:

Scheid, W ^[1]; Greiner, W

Justus-Liebig Univ., Giessen, West Germany

Publication Date:: Sun Jan 01 00:00:00 EST 1978

OSTI Identifier:: 5973535

Report Number(s):: CONF-780644-
Journal ID: CODEN: APCPC; TRN: 79-020542

Resource Type:: Conference

Journal Name:: AIP (Am. Inst. Phys.) Conf. Proc.; (United States)

Additional Journal Information:: Journal Volume: 47; Conference: 3. conference on clustering aspects of nuclear structure and nuclear reactions, Winnipeg, Canada, 19 Jun 1978

Country of Publication:: United States

Language:: English

Subject:: 73 NUCLEAR PHYSICS AND RADIATION PHYSICS; HEAVY ION REACTIONS; NUCLEAR REACTION KINETICS; POTENTIAL SCATTERING; TRANSFER REACTIONS; CLUSTER MODEL; EXCITATION; GEV RANGE 01-10; MEV RANGE 10-100; NUCLEAR MOLECULES; NUCLEAR POTENTIAL; RESONANCE; SINGLE-PARTICLE MODEL; CHARGED-PARTICLE REACTIONS; DIRECT REACTIONS; ELASTIC SCATTERING; ENERGY RANGE; ENERGY-LEVEL TRANSITIONS; GEV RANGE; KINETICS; MATHEMATICAL MODELS; MEV RANGE; NUCLEAR MODELS; NUCLEAR REACTIONS; POTENTIALS; REACTION KINETICS; SCATTERING; 653003* - Nuclear Theory- Nuclear Reactions & Scattering

Citation Formats


                    Scheid, W, and Greiner, W. Heavy ion clustering aspects and molecular resonances. [Excitation, quasibound states, single-particle effects, fragmentation theory, antisymmetric effects].  United States: N. p., 1978. 
        Web.

Copy to clipboard


                    Scheid, W, & Greiner, W. Heavy ion clustering aspects and molecular resonances. [Excitation, quasibound states, single-particle effects, fragmentation theory, antisymmetric effects].  United States.

Copy to clipboard


                    Scheid, W, and Greiner, W. 1978.  
        "Heavy ion clustering aspects and molecular resonances. [Excitation, quasibound states, single-particle effects, fragmentation theory, antisymmetric effects]".  United States.

Copy to clipboard


                    
@article{osti_5973535,

  title        = {Heavy ion clustering aspects and molecular resonances. [Excitation, quasibound states, single-particle effects, fragmentation theory, antisymmetric effects]},

  author       = {Scheid, W and Greiner, W},

  abstractNote = {Selected aspects are presented for a theoretical description of molecular resonance phenomena. These are the conditions for the existence of nuclear molecules, calculations of real and imaginary heavy-ion potentials, the excitation mechanism of quasibound molecular resonances and quasimolecular single-particle effects. More-nucleon and cluster transfers between nuclei can be treated in fragmentation theory. Lastly the application of parastatistics to nucleus--nucleus scattering is treated, and yields some new results in connection with the antisymmetrization effects between nuclei. 25 references. (JFP)},

  doi          = {},

  url          = {https://www.osti.gov/biblio/5973535},
  journal      = {AIP (Am. Inst. Phys.) Conf. Proc.; (United States)},
number       = ,

  volume       = 47,

  place        = {United States},

  year         = {Sun Jan 01 00:00:00 EST 1978},

  month        = {Sun Jan 01 00:00:00 EST 1978}

}

Copy to clipboard

Conference:

Other availability

Please see Document Availability for additional information on obtaining the full-text document. Library patrons may search WorldCat to identify libraries that hold this conference proceeding.

Save / Share:

Export Metadata

Save to My Library

Similar records in OSTI.GOV collections:

Molecular resonance and highly deformed fission fragments in {sup 28}Si+{sup 28}Si

Journal Article Beck, C; Nouicer, R; Disdier, D; ... - Physical Review C

A high-resolution measurement of fragment-fragment-{gamma} triple coincidence events in the symmetric and near-symmetric mass exit channels from the {sup 28}Si+{sup 28}Si reaction has been undertaken using the EUROGAM Phase II {gamma}-ray spectrometer. The bombarding energy of E{sub lab}({sup 28}Si)=111.6 MeV has been selected to populate the conjectured J{sup {pi}}=38{sup +} quasimolecular resonance in the {sup 56}Ni dinuclear system. In the {sup 28}Si+{sup 28}Si symmetric mass exit channel, the resonance behavior is clearly verified at the chosen energy. The population of highly excited states in the {sup 24}Mg, {sup 28}Si, and {sup 32}S nuclei is discussed within a statistical fusion-fission model.more »« less
https://doi.org/10.1103/PhysRevC.63.014607
Treatment of resonances in the scattering of a heavy positron by H{sub 2} that are due to interaction with vibrationally excited quasibound states

Journal Article Armour, E - Physical Review. A

For a positron with wave number k, the rate of annihilation when scattered by an atom or molecule is proportional to Z{sub eff}(k), the effective number of electrons in the target that are available to the positron for annihilation. There is currently great interest in the very large positron annihilation rates, and hence values of Z{sub eff}(k), that have been observed in low-energy positron scattering by some molecules. These are observed experimentally to occur at energies just below the energies of excited vibrational states of the molecule concerned. This has been explained by Gribakin [Phys. Rev. A 61, 022720 (2000)]more »« less
https://doi.org/10.1103/PHYSREVA.82.042702
Antisymmetrization and core excitation in deuteron--nucleus scattering

Journal Article Pong, W; Austern, N - Ann. Phys. (N.Y.), v. 93, no. 1, pp. 369-401

The effects of antisymmetrization in deuteron--nucleus scattering are studied under the assumption that the target is unexcited during scattering. The effective Hamiltonian that governs the motion of the nucleons in the deuteron replaces the free n--p interaction in the deuteron by one that does not scatter the nucleons into occupied states of the target. This modified n--p interaction is constructed by explicit projection of the free n--p interaction onto unoccupied states of the target, and the projection operators used are expressed in terms of single-particle density matrices of the target. The antisymmetrization correction to the deuteron--nucleus optical potential is calculatedmore »« less
https://doi.org/10.1016/0003-4916(75)90215-8
Dipole resonances in light neutron-rich nuclei studied with time-dependent calculations of antisymmetrized molecular dynamics

Journal Article Kanada-En'yo, Y; Kimura, M - Physical Review. C, Nuclear Physics

To study isovector dipole responses of neutron-rich nuclei, we applied a time-dependent method of antisymmetrized molecular dynamics. The dipole resonances in Be, B, and C isotopes were investigated. In {sup 10}Be, {sup 15}B, and {sup 16}C, collective modes of the vibration between a core and valence neutrons cause soft resonances at the excitation energy E{sub x}=10-15 MeV below the giant dipole resonance (GDR). In {sup 16}C, we found that a remarkable peak at E{sub x}=14 MeV corresponds to the coherent motion of four valence neutrons against a {sup 12}C core, whereas the GDR arises in the E{sub x}>20 MeV regionmore »« less
https://doi.org/10.1103/PhysRevC.72.064301
Quasibound levels and shape resonances of /sup 39/K/sub 2/(B /sup 1/Pi/sub u/) crossed laser-molecular beam studies and analytical interpretation

Journal Article Heinze, J; Kowalczyk, P; Engelke, F - J. Chem. Phys.; (United States)

Quasibound levels and shape resonances in the (B /sup 1/Pi/sub u/ -X /sup 1/..sigma../sup +//sub g/) band system of /sup 39/K/sub 2/ have been recorded by crossed laser-molecular beam techniques. Using optical--optical double resonance, individual rovibrational levels (v'' = 15--18, J'' = 3--25) of the K/sub 2/ state are prepared by Franck--Condon pumping (FCP) in a supersonic nozzle beam. Excitation into quasibound levels below and above the (B /sup 1/Pi/sub u/) state barrier is detected as molecular and atomic (K4 /sup 2/P/sub 3//sub ///sub 2/..-->..4 /sup 2/S/sub 1//sub ///sub 2/ only) fluorescence. The resonance transition frequencies and shapes are measuredmore »« less

Similar Records