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Title: Direct neutron decay of the isoscalar giant dipole resonance

Abstract

The direct and statistical neutron decay of the isoscalar giant dipole resonance has been studied in {sup 90}Zr, {sup 116}Sn, and {sup 208}Pb using the ({alpha}, {alpha}' n) reaction at a bombarding energy of 200 MeV. The spectra of fast decay neutrons populating valence hole states of the Z, N - 1 nuclei were analyzed, and estimates for the branching ratios were determined. The observation of the nucleon-direct-decay channels helped to select giant-resonance strengths and suppress the underlying background and continuum, which led to an indication of the existence of a new mode with L 2 character, presumably the overtone of the isoscalar giant quadrupole resonance.

Authors:
; ; ; ; ;  [1]; ; ; ;  [2];  [3];  [4];  [5]
  1. University of Groningen, Kernfysisch Versneller Instituut (Netherlands)
  2. Institute of Nuclear Research of the Hungarian Academy of Sciences (Debrecen) (Hungary)
  3. University of Notre Dame (United States)
  4. Osaka University, Research Center for Nuclear Physics (Japan)
  5. INFN (Italy)
Publication Date:
OSTI Identifier:
21075747
Resource Type:
Journal Article
Journal Name:
Physics of Atomic Nuclei
Additional Journal Information:
Journal Volume: 70; Journal Issue: 8; Other Information: DOI: 10.1134/S1063778807080145; Copyright (c) 2007 Nauka/Interperiodica; Article Copyright (c) 2007 Pleiades Publishing, Ltd; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1063-7788
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; ALPHA DECAY; BRANCHING RATIO; DIPOLES; FAST NEUTRONS; GIANT RESONANCE; HOLES; LEAD 208; MEV RANGE 100-1000; NEUTRONS; NUCLEAR DECAY; QUADRUPOLES; SPECTRA; TIN 116; VALENCE; ZIRCONIUM 90

Citation Formats

Hunyadi, M, Berg, A M. van den, Davids, B, Harakeh, M N, Huu, M A. de, Woertche, H J, Csatlos, M, Gulyas, J, Krasznahorkay, A, Sohler, D, Garg, U, Fujiwara, M, and Blasi, N. Direct neutron decay of the isoscalar giant dipole resonance. United States: N. p., 2007. Web. doi:10.1134/S1063778807080145.
Hunyadi, M, Berg, A M. van den, Davids, B, Harakeh, M N, Huu, M A. de, Woertche, H J, Csatlos, M, Gulyas, J, Krasznahorkay, A, Sohler, D, Garg, U, Fujiwara, M, & Blasi, N. Direct neutron decay of the isoscalar giant dipole resonance. United States. https://doi.org/10.1134/S1063778807080145
Hunyadi, M, Berg, A M. van den, Davids, B, Harakeh, M N, Huu, M A. de, Woertche, H J, Csatlos, M, Gulyas, J, Krasznahorkay, A, Sohler, D, Garg, U, Fujiwara, M, and Blasi, N. 2007. "Direct neutron decay of the isoscalar giant dipole resonance". United States. https://doi.org/10.1134/S1063778807080145.
@article{osti_21075747,
title = {Direct neutron decay of the isoscalar giant dipole resonance},
author = {Hunyadi, M and Berg, A M. van den and Davids, B and Harakeh, M N and Huu, M A. de and Woertche, H J and Csatlos, M and Gulyas, J and Krasznahorkay, A and Sohler, D and Garg, U and Fujiwara, M and Blasi, N},
abstractNote = {The direct and statistical neutron decay of the isoscalar giant dipole resonance has been studied in {sup 90}Zr, {sup 116}Sn, and {sup 208}Pb using the ({alpha}, {alpha}' n) reaction at a bombarding energy of 200 MeV. The spectra of fast decay neutrons populating valence hole states of the Z, N - 1 nuclei were analyzed, and estimates for the branching ratios were determined. The observation of the nucleon-direct-decay channels helped to select giant-resonance strengths and suppress the underlying background and continuum, which led to an indication of the existence of a new mode with L 2 character, presumably the overtone of the isoscalar giant quadrupole resonance.},
doi = {10.1134/S1063778807080145},
url = {https://www.osti.gov/biblio/21075747}, journal = {Physics of Atomic Nuclei},
issn = {1063-7788},
number = 8,
volume = 70,
place = {United States},
year = {Wed Aug 15 00:00:00 EDT 2007},
month = {Wed Aug 15 00:00:00 EDT 2007}
}