scholarly journals Extrapolation of neutron-rich isotope cross-sections from projectile fragmentation

2007 ◽  
Vol 79 (1) ◽  
pp. 12001 ◽  
Author(s):  
M Mocko ◽  
M. B Tsang ◽  
Z. Y Sun ◽  
L Andronenko ◽  
M Andronenko ◽  
...  
Keyword(s):  
Cross Sections ◽  
Projectile Fragmentation ◽  
Neutron Rich Isotope

PROJECTILE FRAGMENTATION OF 36,40Ar INDUCED REACTIONS

2010 ◽  
Vol 19 (08n09) ◽  
pp. 1815-1822
Author(s):  
W. D. TIAN ◽  
Y. G. MA ◽  
H. W. WANG ◽  
G. H. LIU ◽  
C. W. MA ◽  
...  
Keyword(s):  
Atomic Number ◽  
Cross Sections ◽  
Transmission Rate ◽  
Neutron Number ◽  
Projectile Fragmentation ◽  
Fragment Separator ◽  
Isotope Yield ◽  
Ablation Model

Fragment yields for Z ≥ 5 from projectile fragmentation using primary beams of 36,40Ar at 50 MeV/nucleon on 64 Ni target have been measured in RIBLL fragment separator. We compare the fragment cross sections with the predictions of the empirical EPAX parametrization of fragmentation cross-sections and Statistical Abration-Ablation model (SAA) by considering the RIBLL separator transmission rate. Isotope yield ratios between these two reactions were calculated and isoscaling parameters α and β are extracted, their dependences on fragment atomic number Z and neutron number N were presented.

scholarly journals Projectile Fragmentation of 16O and 32S beams from Dubna LHE Synchrophasotron

2020 ◽  
Vol 4 ◽  
pp. 163
Author(s):  
D. Sampsonidis ◽  
B. A. Kulakov ◽  
M. I. Krivopustov ◽  
V. S. Butsev ◽  
M. Zamani
Keyword(s):  
Solid State ◽  
Experimental Method ◽  
Cross Sections ◽  
Measurement System ◽  
Automatic Measurement ◽  
Projectile Fragmentation ◽  
Total Charge ◽  
Nuclear Track Detectors ◽  
Automatic Measurement System

We investigate the charge changing collisions for 16O and 32S beams, using the experimental method of Solid State Nuclear Track Detectors (SSNTD). Sample reading was performed by an automatic measurement system. We determined the total charge changing cross sections and the partial cross sections for the production of fragments of cherge 9<Z<14.

PROJECTILE FRAGMENTATION OF 36,40Ar INDUCED REACTIONS

2010 ◽  
Vol 19 (05n06) ◽  
pp. 1076-1083
Author(s):  
W. D. TIAN ◽  
H. W. WANG ◽  
Y. G. MA ◽  
G. H. LIU ◽  
C. W. MA ◽  
...  
Keyword(s):  
Atomic Number ◽  
Cross Sections ◽  
Transmission Rate ◽  
Neutron Number ◽  
Projectile Fragmentation ◽  
Isotope Yield ◽  
Fragmentation Reactions ◽  
Ablation Model

Fragment yields of projectile fragmentation reactions using primary beams of 36,40Ar at 50 MeV/nucleon on 64 Ni target have been measured. Fragment yields of different isotopes were obtained for Z ≥ 5 in RIBLL fragment seperator. We compare the extracted yields to the predictions of the empirical parametrization of fragmentation cross-sections(EPAX) and Statistical Abration-Ablation model(SAA) considering the RIBLL separator transmission rate. Isotope yield ratios between these 2 reactions were calculated, isoscaling parameters α and β, their dependence on fragment atomic number Z and neutron number N were calculated.

THE SYSTEMATIC BEHAVIOR IN THE FRAGMENTS OF THE CALCIUM ISOTOPES PROJECTILE FRAGMENTATION

2010 ◽  
Vol 19 (08n09) ◽  
pp. 1545-1552 ◽  
Author(s):  
CHUN-WANG MA ◽  
HUI-LING WEI ◽  
YU-QI LI
Keyword(s):  
Cross Section ◽  
Cross Sections ◽  
Linear Correlation ◽  
Binding Energies ◽  
Projectile Fragmentation ◽  
Skin Thickness ◽  
Neutron Skin ◽  
Good Linear ◽  
Calcium Isotopes ◽  
Good Linear Correlation

We have calculated the cross sections of the fragments produced in the projectile fragmentation of the even 36–52 Ca isotopes using the statistical abrasion-ablation model. The isospin effect in the projectile fragmentation are studied by investigating the peak positions and the widths of the fragment isotopic cross section distributions. The peak positions of the fragments isotopic cross section distributions have good linear correlation to the Z of the fragments and the correlations are fitted using the linear function. The correlations between slopes b and the binding energies of the neutron ( S n) of the projectile nuclei, the differences between the binding energies of the neutron and proton( S n- S p) of the projectile nuclei and the neutron-skin thickness (δnp) are studied. It is found that b and δnp has a good linear correlation for the neutron-rich projectile nuclei.

Benchmarking of calculated projectile fragmentation cross-sections using the 3-D, MC codes PHITS, FLUKA, HETC-HEDS, MCNPX_HI, and NUCFRG2

2008 ◽  
Vol 63 (7-10) ◽  
pp. 865-877 ◽  
Author(s):  
L. Sihver ◽  
D. Mancusi ◽  
K. Niita ◽  
T. Sato ◽  
L. Townsend ◽  
...  
Keyword(s):  
Cross Sections ◽  
Projectile Fragmentation

scholarly journals Cross sections of neutron-rich nuclei from projectile fragmentation: Canonical thermodynamic model estimates

2007 ◽  
Vol 76 (6) ◽  
Author(s):  
G. Chaudhuri ◽  
S. Das Gupta ◽  
W. G. Lynch ◽  
M. Mocko ◽  
M. B. Tsang
Keyword(s):  
Cross Sections ◽  
Thermodynamic Model ◽  
Projectile Fragmentation

Analysis of STEM micrographs of thick objects

1978 ◽  
Vol 36 (2) ◽  
pp. 106-107
Author(s):  
S. Golladay
Keyword(s):  
Inelastic Scattering ◽  
Multiple Scattering ◽  
Mass Distribution ◽  
Cross Sections ◽  
Phase Contrast ◽  
Image Point ◽  
Contrast Effects ◽  
Total Cross Sections ◽  
Elastic And Inelastic Scattering

The theory of multiple scattering has been worked out by Groves and comparisons have been made between predicted and observed signals for thick specimens observed in a STEM under conditions where phase contrast effects are unimportant. Independent measurements of the collection efficiencies of the two STEM detectors, calculations of the ratio σe/σi = R, where σe, σi are the total cross sections for elastic and inelastic scattering respectively, and a model of the unknown mass distribution are needed for these comparisons. In this paper an extension of this work will be described which allows the determination of the required efficiencies, R, and the unknown mass distribution from the data without additional measurements or models. Essential to the analysis is the fact that in a STEM two or more signal measurements can be made simultaneously at each image point.

Sign in / Sign up

Export Citation Format

Share Document