Interplay of the elastic and inelastic channels in the 16O+27Al scattering at Elab=280 MeV

被引：26
作者：
Cappuzzello, F. [1 ,2 ]
Nicolosi, D. [1 ,2 ]
Linares, R. [3 ]
Oliveira, J. R. B. [4 ]
Lubian, J. [3 ]
Agodi, C. [2 ]
Carbone, D. [2 ]
Cavallaro, M. [2 ]
de Faria, P. N. [3 ]
Foti, A. [1 ,5 ]
Rodrigues, M. R. D. [4 ]
机构：
[1] Univ Catania, Dipartimento Fis & Astron, I-95125 Catania, Italy
[2] Ist Nazl Fis Nucl, Lab Nazl Sud, I-95125 Catania, Italy
[3] Univ Fed Fluminense, Inst Fis, BR-24210346 Niteroi, RJ, Brazil
[4] Univ Sao Paulo, Inst Fis, DFN, CP 66318, BR-05314970 Sao Paulo, SP, Brazil
[5] Ist Nazl Fis Nucl, Sez Catania, Via S Sofia 64, I-95125 Catania, Italy
来源：
EUROPEAN PHYSICAL JOURNAL A | 2016年 / 52卷 / 06期
基金：
巴西圣保罗研究基金会;
关键词：
NUCLEAR RAINBOW; ALPHA-SCATTERING; AL-27; O-16; SPECTROMETER; SI-28;
D O I：
10.1140/epja/i2016-16169-y
中图分类号：
O57 [原子核物理学、高能物理学];
学科分类号：
070202 ;
摘要：
Recent data indicated a nuclear rainbow-like pattern in the elastic scattering of O-16 + Al-27 at E-lab = 100 MeV that arises from couplings of the ground to the low-lying states of the Al-27 nucleus. Similar effect was identified in the elastic angular distribution of O-16 + C-12 at E-lab = 281 and 330 MeV. These experiments show a crucial role of microscopic details of nuclear structure in the elastic scattering of heavy ions at energies well above the Coulomb barrier. In this work we investigate the O-16 + Al-27 system at E-lab = 280MeV for which a coupled channel calculation predicts a pronounced nuclear rainbow-like structure. Obtained experimental data show evidences of an important coupling of the elastic channel to the inelastic. Coupled channel calculations reproduce the experimental angular distributions when a renormalization factor on the real part of the optical potential is introduced. A proper theoretical approach still requires a high degree of accuracy for the nuclear structure models and new tools to deal with collective excitations.
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页数：6
相关论文
共 32 条
  • [1] Bohr A, 1997, NUCL STRUCTURE, V2
  • [2] BRAUNMUNZINGER P, 1982, PHYS REP, V87, P210, DOI 10.1016/0370-1573(82)90107-7
  • [3] Effects of configuration mixing in heavy-ion elastic scattering
    Cappuzzello, F.
    Lubian, J.
    Oliveira, J. R. B.
    Agodi, C.
    Bondi, M.
    Carbone, D.
    Cavallaro, M.
    Chamon, L. C.
    Cunsolo, A.
    De Napoli, M.
    Foti, A.
    Garcia, V. Nunes
    Gasques, L. R.
    Gomes, P. R. S.
    Linares, R.
    Nicolosi, D.
    Paes, B.
    Tropea, S.
    [J]. INPC 2013 - INTERNATIONAL NUCLEAR PHYSICS CONFERENCE, VOL. 1, 2014, 66
  • [4] A broad angular-range measurement of elastic and inelastic scatterings in the 16O on 27Al reaction at 17.5 MeV/u
    Cappuzzello, F.
    Agodi, C.
    Bondi, M.
    Carbone, D.
    Cavallaro, M.
    Cunsolo, A.
    De Napoli, M.
    Foti, A.
    Nicolosi, D.
    Tropea, S.
    de Faria, P. N.
    Linares, R.
    Oliveira, J. R. B.
    Rodrigues, M. R. D.
    [J]. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2014, 763 : 314 - 319
  • [5] Cappuzzello F., 2012, MAGNETS TYPES USES S
  • [6] Challenging measurement of the 16O+27Al elastic and inelastic angular distributions up to large angles
    Cavallaro, M.
    Cappuzzello, F.
    Carbone, D.
    Cunsolo, A.
    Foti, A.
    Linares, R.
    Pereira, D.
    Oliveira, J. R. B.
    Gomes, P. R. S.
    Lubian, J.
    Chen, R.
    [J]. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2011, 648 (01) : 46 - 51
  • [7] Nonlocal description of the nucleus-nucleus interaction
    Chamon, LC
    Pereira, D
    Hussein, MS
    Ribeiro, MAC
    Galetti, D
    [J]. PHYSICAL REVIEW LETTERS, 1997, 79 (26) : 5218 - 5221
  • [8] UNIQUE ENERGY-INDEPENDENT WOODS-SAXON OPTICAL-POTENTIAL FOR O-16 + SI-28 ELASTIC-SCATTERING
    CRAMER, JG
    DEVRIES, RM
    GOLDBERG, DA
    ZISMAN, MS
    MAGUIRE, CF
    [J]. PHYSICAL REVIEW C, 1976, 14 (06): : 2158 - 2161
  • [9] Technique for 1st order design of a large-acceptance magnetic spectrometer
    Cunsolo, A
    Cappuzzello, F
    Foti, A
    Lazzaro, A
    Melita, AL
    Nociforo, C
    Shchepunov, V
    Winfield, JS
    [J]. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2002, 481 (1-3) : 48 - 56
  • [10] Ion optics for large-acceptance magnetic spectrometers: application to the MAGNEX spectrometer
    Cunsolo, A
    Cappuzzello, F
    Foti, A
    Lazzaro, A
    Melita, AL
    Nociforo, C
    Shchepunov, V
    Winfield, JS
    [J]. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2002, 484 (1-3) : 56 - 83
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