Results 241 to 250 of about 9,113,592 (299)

SLICES: Spes Low-Energy Internal Conversion Electron Spectrometer

Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2021
Abstract The Spes Low-energy Internal Conversion Electron Spectrometer (SLICES) is a new electron spectrometer designed to perform off-beam measurements at the beta decay station of the SPES facility at the Legnaro National Laboratories (LNL). SLICES consists of a large area Si(Li) detector cooled at −150 °C and a magnetic transport system.
Marco Rocchini, Andrea Gottardo, Thomas Krings   +2 more
exaly   +4 more sources

Internal Conversion of Nuclear Energy

Nature, 1930
WHEN a nucleus passes from an excited state into a state of lower energy, two different processes may occur: either a γ-quantum is emitted or one of the extra-nuclear electrons thrown out of the atom (with an energy equal to that of the γ-quantum minus the ionisation energy of the electronic level); in this case we speak of internal conversion of ...
exaly   +2 more sources

Internal conversion and the crossing of molecular potential energy surfaces

Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 1962
Abstract A re-examination is made of the Landau-Zener formula relating to the probability of an electronic jump near the crossing-point of two potential energy curves (or surfaces). Three cases are distinguished: discrete-discrete, discrete-continuum and continuum-continuum transitions.
Coulson, C. A., Zalewski, K.
openaire   +1 more source

INTERNAL CONVERSION COEFFICIENTS FOR HIGH-ENERGY TRANSITIONS

Atomic Data and Nuclear Data Tables, 1972
The K-and L-shell internal conversion coefficients for transition energies above 1 MeV are presented. The coefficients are given for the two lowest electric and magnetic multipoles in the region 16≤Z≤99 for K-shell and for the four lowest multipoles in the region 50≤Z≤100 for L-shell.
openaire   +1 more source

The dissipation of excitation energy in methoxyflavones by internal conversion

Journal of Photochemistry and Photobiology A: Chemistry, 1996
Abstract Flavonoids are found in all higher plants, and many display strong absorption in the UVB spectral region. It has been suggested that they play a role in the protection of plants by screening cital cellular components from damaging UV radiation.
Gerald J. Smith, Kenneth R. Markham
openaire   +1 more source

High-energy internal conversion coefficients

Nuclear Physics A, 1969
Abstract The K-shell internal conversion coefficients were calculated for every fifth value of the atomic number Z from Z = 30 to Z = 100 for lowest four electric and magnetic transition multipoles. The finite nuclear size effect and screening by atomic electrons were considered precisely in the energy region from 6 to 9.5 mc 2 and ...
openaire   +1 more source

Internal conversion coefficients for high-energy transitions

Nuclear Physics, 1966
Abstract For transition energies ω ⪢ mc 2 (rest-energy of the electron) our previously derived exact analytical results for the internal conversion coefficients (ICC) for all shells and for all transition energies (point-nucleus, no screening model) simplify considerably.
C.O. Carroll, R.F. O'Connell
openaire   +1 more source

Vibrational Energy Redistribution in Glyoxal Following Internal Conversion

Journal of Chemical Physics, 1979
The vibrational redistribution of energy following internal conversion in glyoxal has been studied in a molecular beam using the ’’pump-and-probe’’ technique. A beam of glyoxal is initially pumped from So to a selected vibronic level of S1. After internal conversion occurs, a tunable dye laser is used to probe the hot band absorption of the molecules ...
D M Lubman
exaly   +2 more sources

A study of internal conversion at transitions of higher energy in the decay131I

Acta Physica Academiae Scientiarum Hungaricae, 1971
The higher energy region of gamma-rays (from 480 to 810 keV) and conversion electrons (from 570 to 760 keV) was studied with a 20 cm3 Ge(Li) and a 3 mm deep Si(Li) semiconductor spectrometer, respectively. For the conversion coefficients and for their ratio,α K = (3,6 ± 0.5) · 10−3 andK/L=5.3±1.
D. Varga, Á. Kövér, D. Berényi, T. Lakatos   +3 more
openaire   +1 more source