New search for O-26

被引：115

作者：

Fauerbach, M

Morrissey, DJ

Benenson, W

Brown, BA

Hellstrom, M

Kelley, JH

Kryger, RA

Pfaff, R

Powell, CF

Sherrill, BM

机构：

[1] MICHIGAN STATE UNIV, NATL SUPERCONDUCTING CYCLOTRON LAB, E LANSING, MI 48824 USA

[2] MICHIGAN STATE UNIV, DEPT CHEM, E LANSING, MI 48824 USA

来源：

PHYSICAL REVIEW C | 1996年 / 53卷 / 02期

关键词：

D O I：

10.1103/PhysRevC.53.647

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：

An attempt was made to find the very neutron-rich isotope O-26 among the fragmentation products of a 90 MeV/nucleon Ar-40 beam. This isotope has been predicted to be bound but. was not observed in a previous experiment by Guillemaud-Mueller et al. As part of the search, the momentum distributions of all the oxygen isotopes in the range from O-17 to O-24 were carefully determined so that the optimum separator setting for O-26 could be used. From an extrapolation of the counting rates of the lighter oxygen isotopes, we expected to observe several hundred events of O-26 during the measurement. However, no events could be attributed to O-26, thus indicating the particle instability of this isotope. The results for the production cross sections of 72 neutron-rich isotopes, ranging from P-38 to B-11, are presented and compared to predictions.

引用

页码：647 / 651

页数：5

共 12 条

[1]

ANDI G, 1993, NUCL PHYS A, V565, P1

[2]

BAZIN D, UNPUB

[3] SEMI-EMPIRICAL EFFECTIVE INTERACTIONS FOR THE 1S-0D SHELL [J].

BROWN, BA ;

RICHTER, WA ;

JULIES, RE ;

WILDENTHAL, BH .

ANNALS OF PHYSICS, 1988, 182 (02) :191-236

[4] PROJECTILE FRAGMENTS ISOTOPIC-SEPARATION - APPLICATION TO THE LISE SPECTROMETER AT GANIL [J].

DUFOUR, JP ;

DELMORAL, R ;

EMMERMANN, H ;

HUBERT, F ;

JEAN, D ;

POINOT, C ;

PRAVIKOFF, MS ;

FLEURY, A ;

DELAGRANGE, H ;

SCHMIDT, KH .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 1986, 248 (2-3) :267-281

[5] PARTICLE STABILITY OF THE ISOTOPES O-26 AND NE-32 IN THE REACTION 44 MEV/NUCLEON CA-48 + TA [J].

GUILLEMAUDMUELLER, D ;

JACMART, JC ;

KASHY, E ;

LATIMIER, A ;

MUELLER, AC ;

POUGHEON, F ;

RICHARD, A ;

PENIONZHKEVICH, YE ;

ARTUHK, AG ;

BELOZYOROV, AV ;

LUKYANOV, SM ;

ANNE, R ;

BRICAULT, P ;

DETRAZ, C ;

LEWITOWICZ, M ;

ZHANG, Y ;

LYUTOSTANSKY, YS ;

ZVEREV, MV ;

BAZIN, D ;

SCHMIDTOTT, WD .

PHYSICAL REVIEW C, 1990, 41 (03) :937-941

[6]

MOLLER P, 1988, ATOM DATA NUCL DATA, V39, P221

[7] PROJECTILE-LIKE FRAGMENT MOMENTUM DISTRIBUTIONS FROM KR-86+AL AT 70-MEV/NUCLEON [J].

PFAFF, R ;

MORRISSEY, DJ ;

FAUERBACH, M ;

HELLSTROM, M ;

KELLEY, JH ;

KRYGER, RA ;

SHERRILL, BM ;

STEINER, M ;

WINFIELD, JS ;

WINGER, JA ;

YENNELLO, SJ ;

YOUNG, BM .

PHYSICAL REVIEW C, 1995, 51 (03) :1348-1355

[8] THE A1200 PROJECTILE FRAGMENT SEPARATOR [J].

SHERRILL, BM ;

MORRISSEY, DJ ;

NOLEN, JA ;

WINGER, JA .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 1991, 56-7 (pt 2) :1106-1110

[9] TARGET FRAGMENTATION OF AU AND TH BY 2.6 GEV PROTONS [J].

SUMMERER, K ;

BRUCHLE, W ;

MORRISSEY, DJ ;

SCHADEL, M ;

SZWERYN, B ;

YANG, WF .

PHYSICAL REVIEW C, 1990, 42 (06) :2546-2561

[10] MASS SYSTEMATICS FOR A = 29-44 NUCLEI - THE DEFORMED A-APPROXIMATELY-32 REGION [J].

WARBURTON, EK ;

BECKER, JA ;

BROWN, BA .

PHYSICAL REVIEW C, 1990, 41 (03) :1147-1166

← 1 2 →