4,040 research outputs found
Isospin-symmetry breaking corrections for the description of triplet energy differences
No full textThe charge-independence breaking of the nuclear interaction is analyzed by means of energy differences
among analog states in T=1 isobaric multiplets. Data on triplet energy differences in the sd, pf, and pf5/2g shells, i.e., 18<A<66, are reproduced with very good accuracy by large-scale shell-model calculations taking
into account, aside from the Coulomb interaction, a single isotensor schematic interaction of monopole-pairing
type. It is shown that the effect on the triplet energy differences of this isospin-breaking interaction is of the
same magnitude as the Coulomb one. Moreover, its strength is the same for every single-particle orbital of the
considered model space
THE 4550 {\AA} BAND SYSTEM OF GLYOXAL
No full textAuthor Institution: Division of Pure Physics, National Research Council“Approximately 45 bands of glyoxal in the region 4000-4660 {\AA} have been photographed in absorption using a 30 ft. Ebert spectrograph with a resolving power of and a dispersion of 1.3 {\AA}/cm. The (0-0) baud near 4550 {\AA}, which WAS studied at a temperature of C, shows fairly well-resolved J- and K- structure characteristic of a perpendicular hand of a near symmetric top molecule. The rotational and vibrational analysis of the speetrum will be discussed.
THE ANALYSIS OF FIVE ELECTRONIC EMISSION SYSTEMS OF NIOBIUM NITRIDE (NbN) IN THE REGION 5000{\AA} – 6200{\AA}
No full textK. H. Rao and T. M. Dunn, Nature 222, 266 (1969). J. L. Femenias, C. Athenour, and T. M. Dunn, J. Chem. Phys. 63, 2861 (1975).Author Institution:Niobium nitride emission systems have been found at 5l37{\AA}, 5582{\AA}, 5740{\AA}, 5840{\AA}, 5860{\AA}, in addition to the already systems with subbands at 5930{\AA}, 6043{\AA}, and 6192{\AA}. Most of These systems show marked nuclear hyperfine structure of the rotational lines add this has been of assistance in the analysis of all of the systems. Systems of triplet-triplet, singlet-singlet and singlet-triplet are all present and the hyperfine structure also allows assignment of the ground and excited state electron configuration to be made with some confidence
ROTATIONAL ANALYSIS OF THE 6125 \AA \ REGION
No full text C. G. Stevens and R. N, Zare, J. Mol. Spectrosc. 56, 167 (1975). R. E. Smalley, L. Wharton, and D. H. Levy, J. Chem. Phys. 63, 4977 (1975).Author Institution: Department of Chemistry, Columbia University; Department of Chemistry, Columbia University, New yorkThe 6125 \AA \ region wag chosed for investigation, because of the strength of the transitions and because of the seeming simplicity of this region. From an analysis of the rotationally resolved fluorescence of excited by a narrow band (0.03 \AA) \ tunable dye quantum numbers have been assigned to 150 transitions in the 6125 \AA \ region. Four vibronic bands are observed in a 20 \AA \ interval, two of which have been previously A rotational analysis of the 6125 \AA \ and 6126 \AA \ bands is presented, while the small number of transitions assigned to the 6117 \AA \ and 6119 \AA \ bands precludes analysis
Beta-delayed (multi-)particle decay studies
No full text21 pags.; 10 figs.Here we report on beta-delayed multi-particle-breakup studies made at IGISOL to determine the nuclear structure and eventual alpha clustering in light nuclei. The experimental studies were performed in full kinematics and we will dedicate part of this article to technical details of the experiments. In particular we will discuss the breakup of excited states in 12C fed by beta decay from 12B and 12N, the study of the beta decay of 13O, as well as studies determining the neutrino spectrum of 8B. © Springer Science+Business Media B.V. 2012This work was partly financed by the Spanish Ministry of Science and Technology
under project FPA2007-62170, FPA2009-07387 and partly by the European Union under
contract EURONS JR4/DLEP (contract no. 506065).This work was partly financed by the Spanish Ministry of Science and Technology
under project FPA2007-62170, FPA2009-07387 and partly by the European Union under
contract EURONS JR4/DLEP (contract no. 506065).Peer Reviewe
OBSERVED AND COMPUTED ON SPECTRA OF TWO CARBON STARS 6700 -- 6712{\AA}
No full textAuthor Institution: Astronomy Department, Indiana UniversityEmergent fluxes predicted by the model atmospheres of Alexander, Collins, Fay and Johnson (1971, 26th Molecular Spectroscopy Symposium) are compared with Coude spectral tracings of 19 Psc and WZ Cas at 0.2{\AA} resolution from 6700{\AA}--- 6712{\AA}. The line opacity is that of the and 5 sequences of the and radicals, as well as the Li 6707.8 resonance line. Results are presented for and ratios of 2, 5 and 20 as well as Li/H ratios of to
COLLISIONAL DEACTIVATION OF THE 3427 {\AA} VIBRATIOWAL BAND OF THE 3460 - 3015 {\AA} BAND SYSTEM OF BY VARIOUS INERT GASES
No full text J. B. Tellinghuisen, Ph.D. thesis, p. 152. University of California, Berkeley, California, 1969. ""Author Institution: Sandia LaboratoriesThe 3460 - 3015 {\AA} band system of has been tentatively to the transition of . In the course of investigating this system as a candidate for an e-beam initiated laser the collision deactivation rates of the 3427 {\AA} vibrational band by argon and krypton were measured. In addition, the collisional deactivation rate of the 3427 {\AA} vibrational band by ground state was measured and an estimate of the Lifetime of the upper state of the 3427 {\AA} transition was obtained
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