Publications (9)
Influence of nuclear structure on sub-barrier hindrance in Ni+Ni fusion
C. L. Jiang, K. E. Rehm, R. V. F. Janssens +14
Fusion-evaporation cross sections for Ni+Ni have been measured down to the 10 nb level. For fusion between two open-shell nuclei, this is the first observation of a m…
A Shorter 146Sm Half-Life Measured and Implications for 146Sm-142Nd Chronology in the Solar System
N. Kinoshita, M. Paul, Y. Kashiv +16
The extinct p-process nuclide 146Sm serves as an astrophysical and geochemical chronometer through measurements of isotopic anomalies of its alpha-decay daughter 142Nd. Based on an…
The stellar (n,gamma) cross section of 62Ni
H. Nassar, M. Paul, I. Ahmad +23
The 62Ni(n,gamma)63Ni(t_1/2=100+-2 yrs) reaction plays an important role in the control of the flow path of the slow neutron-capture (s-) nucleosynthesis process. We have measured…
A measurement of the ionization efficiency of nuclear recoils in silicon
F. Izraelevitch, D. Amidei, A. Aprahamian +26
We have measured the ionization efficiency of silicon nuclear recoils with kinetic energy between 1.8 and 20 keV. We bombarded a silicon-drift diode with a neutron beam to perform…
Tracing Noble Gas Radionuclides in the Environment
P. Collon, W. Kutschera, Z. -T. Lu
Trace analysis of radionuclides is an essential and versatile tool in modern science and technology. Due to their ideal geophysical and geochemical properties, long-lived noble gas…
Measurement of the equilibrium charge state distributions of Ni, Co, and Cu beams in Mo at 2 MeV/u: review and evaluation of the relevant semi-empirical models
P. Gastis, G. Perdikakis, D. Robertson +7
Equilibrium charge state distributions of stable 60Ni, 59Co, and 63Cu beams passing through a 1um thick Mo foil were measured at beam energies of 1.84 MeV/u, 2.09 MeV/u, and 2.11 M…
First experimental determination of the Ar()Ar reaction cross section and Ar production in Earth's atmosphere
S. Bhattacharya, M. Paul, R. N. Sahoo +28
The cosmogenic Ar(t= 268 years) isotope of argon is used for geophysical dating and tracing owing to its appropriate half-life and chemical inertness as a noble gas;…
Stellar ArAr reactions and their effect on light neutron-rich nuclide synthesis
M. Tessler, M. Paul, S. Halfon +22
The ArAr ( = 35 d) and ArAr (269 y) reactions were studied for the first time with a quasi-Maxwellian ( keV) neutron fl…
Hindrance of Heavy-ion Fusion at Extreme Sub-Barrier Energies in Open-shell Colliding Systems
C. L. Jiang, K. E. Rehm, H. Esbensen +18
The excitation function for the fusion-evaporation reaction 64Ni+100Mo has been measured down to a cross-section of ~5 nb. Extensive coupled-channels calculations have been perform…