ISOTOPE EFFECT IN HEAVY ION RANGE STUDIES

Heavy ion pulses in the picosecond range

2014 High mass resolution time of flight experiments with heavy ions can be performed by a rebuncher cavity operating at 108.48MHz. A normal conducting spiral resonator has been used to bunch 96MeV 32S ions. Operation with an injected dc-beam yielded pulse widths of 0394tFWHM = 70 ps. When phase locking the rebuncher to the nanosecond beam pulsing system of the MP-Tandem pulses in the range of ...

Isotope analysis in central heavy ion collisions at intermediate energies

Symmetry energy is a key quantity in the study of the equation of state of asymmetric nuclear matter. Heavy ion collisions at low and intermediate energies, performed at Laboratori Nazionali di Legnaro and Laboratori Nazionali del Sud, can be used to extract information on the symmetry energy coefficient Csym, which is currently poorly known but relevant both for astrophysics and for structure ...

Isotope effect in ion-atom collisions

We explain the origin of the unusual large isotopic dependence found in charge-transfer cross sections for H(D,T)+ + Be collisions. We show that this large effect appears in a semiclassical treatment as a consequence of the mass dependence of the charge-transfer transition probabilities, which is due to the variation of the radial velocity in the region where the nonadiabatic transitions take p...

Studies of Heavy Ion Induced Desorption in the Energy Range 5-100 MeV/u

Heavy Atom- and Deuterium Isotope Effect in Bis-(Phenylethinyl)-Mercury

The influence of mercury as a heavy atom on the spin orbit coupling is investigated in bis(phenylethinyl)-mercury and its deuterated derivative. From the experimental results we draw the following conclusions: a) the symmetry of the molecule is D2 , b) the large spin orbit coupling of the mercury atom is introduced via djr p^-interaction, c) local a jr-transitions and vibronic coupling are of n...