Production and discovery of neutron-rich isotopes by fragmentation of 198Pt

被引:4
|
作者
Haak, K. [1 ,2 ]
Tarasov, O. B. [1 ]
Chowdhury, P. [3 ]
Rogers, A. M. [3 ]
Sharma, K. [3 ]
Baumann, T. [1 ]
Bazin, D. [1 ,2 ]
Bender, P. C. [3 ]
Chen, J. [1 ]
Estrade, A. [4 ]
Famiano, M. A. [5 ]
Foulds-Holt, D. C. [3 ,10 ]
Fukuda, N. [6 ]
Gade, A. [1 ,2 ]
Ginter, T. N. [1 ]
Gohier, R. W. [5 ]
Hausmann, M. [1 ]
Hill, A. M. [1 ,2 ]
Hoff, D. E. M. [3 ,11 ]
Klankowski, L. [5 ]
Kwan, E. [1 ]
Li, J. [1 ]
Liddick, S. N. [1 ,7 ]
Longfellow, B. [1 ,2 ,11 ]
Lyons, S. [1 ,12 ]
Morse, C. [8 ]
Portillo, M. [1 ]
Rhodes, D. [1 ,2 ,13 ]
Richard, A. L. [1 ,11 ]
Samaranayake, S. [4 ]
Sherrill, B. M. [1 ,2 ]
Smith, M. K. [1 ]
Spieker, M. [1 ,14 ]
Sumithrarachchi, C. S. [1 ]
Suzuki, H. [6 ]
Wang, K. [4 ]
Waniganeththi, S. [3 ]
Weisshaar, D. [1 ]
Zhu, S. [9 ]
机构
[1] Michigan State Univ, Facil Rare Isotope Beams, E Lansing, MI 48824 USA
[2] Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA
[3] Univ Massachusetts Lowell, Dept Phys, Lowell, MA 01854 USA
[4] Cent Michigan Univ, Mt Pleasant, MI 48859 USA
[5] Western Michigan Univ, Kalamazoo, MI 49008 USA
[6] RIKEN, Nishina Ctr, 2-1 Hirosawa, Wako, Saitama 3510198, Japan
[7] Michigan State Univ, Dept Chem, E Lansing, MI 48824 USA
[8] Lawrence Berkeley Natl Lab, Nucl Sci Div, Berkeley, CA 94720 USA
[9] Brookhaven Natl Lab, Natl Nucl Data Ctr, Upton, NY 11973 USA
[10] Univ Cambridge, Cambridge, England
[11] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA
[12] Pacific Northwest Natl Lab, Richland, WA 99352 USA
[13] TRIUMF, 4004 Wesbrook Mall, Vancouver, BC V6T 2A3, Canada
[14] Florida State Univ, Tallahassee, FL 32306 USA
基金
美国安德鲁·梅隆基金会; 美国国家科学基金会;
关键词
PRODUCTION CROSS-SECTIONS; MOMENTUM DISTRIBUTIONS; KINETIC ENERGIES; NUCLEI; YIELDS;
D O I
10.1103/PhysRevC.108.034608
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
Production cross sections were measured for fragments produced by an 85 MeV/u 198Pt beam incident on a beryllium target. Event-by-event particle identification of A, Z, and q for the reaction products was performed by employing energy loss, time-of-flight, magnetic rigidity, and total kinetic energy measurements. Over 70 nuclei in the Hf-Pt region were identified, including three isotopes first observed in this work: 191,192Hf and 189Lu. Due to the existence of multiple charge states between H-like and C-like ions, a new analysis method was introduced, incorporating Monte Carlo calculations of charge state fractions for a given charge state of the projectile residue just after the reaction. For the first time, charge-state probability distribution functions after the reaction have been deduced from experimental data. This study provides insight into how to produce key nuclides near N=126 and the ability of a fragmentation residue to retain electrons from the primary beam.
引用
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页数:10
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