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Kaur, Manpreet; Singh, BirBikram; Patra, S.K.; Gupta, R.K., E-mail: manpreet13phd@sggswu.edu.in
Proceedings of the DAE-BRNS symposium on nuclear physics. V. 622017
Proceedings of the DAE-BRNS symposium on nuclear physics. V. 622017
AbstractAbstract
[en] In the present work, we report on the role of temperature on the collective clusterization process in non-alpha conjugate systems 21,22Ne (N≠ Z) in the ground state and at the temperature equivalent to the excitation energy given by Ikeda diagram. Further, to study the impact of increasing temperature on the clustering, these effects are studied in the CN 21Ne* and 22Ne* formed in 10B+11B and 11B+11B reactions, respectively, with reference to experimental data
Primary Subject
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John, Bency V.; Jha, Vishwajeet; Saxena, Alok (Nuclear Physics Division, Bhabha Atomic Research Centre, Mumbai (India)) (eds.); Board of Research in Nuclear Sciences, Department of Atomic Energy, Mumbai (India); [1220 p.]; Dec 2017; p. 506-507; 62. DAE-BRNS symposium on nuclear physics; Patiala (India); 20-24 Dec 2017; 9 refs., 1 fig.
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Baccou, Claire
Ecole Polytechnique, route de saclay, 91120 Palaiseau (France); Universite Paris-Saclay, Espace Technologique, Bat. Discovery - RD 128 - 2e et., 91190 Saint-Aubin (France); CEA, DAM-DCRE (France)2016
Ecole Polytechnique, route de saclay, 91120 Palaiseau (France); Universite Paris-Saclay, Espace Technologique, Bat. Discovery - RD 128 - 2e et., 91190 Saint-Aubin (France); CEA, DAM-DCRE (France)2016
AbstractAbstract
[en] The recent development of high-intensity laser beams has stimulated the advent of many schemes to produce nuclear reactions by laser. Laser pulses with intensity higher than 1018 W.cm-2 can particularly be used to accelerate proton and ion beams with interesting characteristics such as a broad spectrum, a short duration (10 ps), a large number of particles per picosecond and a high energy cut-off, up to tens MeV. Thus, nuclear reactions with resonances close to hundreds keV can be initiated, such as the p-11B fusion reaction which releases 8.7 MeV and three alpha particles, or, such as threshold reactions with produce positron emitters, used in nuclear medicine. This thesis was dedicated to the development of an experimental platform at the ELFIE laser facility, at LULI (Ecole Polytechnique, France) to study the production of nuclear reactions using the following scheme: a proton beam is accelerated by the TNSA mechanism on a first target, and sent into a boron target to induce nuclear reactions. A second laser beam can be used to ionize and heat the boron target. A set of complementary diagnostics has been developed to measure and characterize the reaction products. Several parameters such as the proton flux, the proton spectrum, the boron target state (solid or plasma) and its composition were studied in order to identify the physics parameters that optimize the number of reactions. The understanding of the physics that govern the production of reactions in this scheme is necessary to consider applications in medicine or in fusion schemes, to produce energy. (author)
[fr]
L'avenement des lasers de forte intensite ouvre une nouvelle voie pour la production de reactions nucleaires par laser. En particulier, les impulsions d'intensites superieures a 1018 W.cm-2 permettent d'accelerer des faisceaux de protons, et d'ions, caracterises par un large spectre, une courte duree d'impulsion de l'ordre de la dizaine de picoseconde, un flux (nombre de particules par unite de temps) superieur de plusieurs ordres de grandeurs aux flux obtenus dans les accelerateurs classiques et des energies allant jusqu'a plusieurs dizaines de MeV. De telles energies permettent d'initier des reactions nucleaires ayant des resonances autour de la centaine de keV, telles que la reaction de fusion p-11B qui libere trois particules alpha et 8,7 MeV, ou encore des reactions a seuil qui produisent des radio-isotopes, utiles pour la medecine nucleaire. Cette these a ete dediee au developpement d'une plateforme experimentale sur l'installation laser ELFIE, du LULI (Ecole Polytechnique, France) pour etudier la production de reactions nucleaires dans le cadre du schema laser suivant: un faisceau de protons est accelere par laser sur une premiere cible, par mecanisme TNSA, puis une cible de bore est irradiee par ces protons pour produire les reactions nucleaires. Un second faisceau laser peut etre declenche pour ioniser la cible de bore. Un ensemble de diagnostics complementaires a ete developpe pour mesurer et caracteriser les produits de reactions. Differents parametres tels que le flux de protons, le spectre de protons, l'etat de la cible de bore (solide ou plasma) ou sa composition, ont ete testes afin d'identifier les parametres physiques qui permettent d'optimiser le nombre de reactions. La comprehension de la physique qui regit la production des reactions nucleaires dans ces conditions est indispensable pour envisager des applications en medecine, ou dans des schemas de fusion pour produire de l'energie. (l'auteur)Original Title
Initiation de reactions nucleaires par des protons acceleres par laser
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21 Jun 2016; 217 p; 174 refs.; Available from the INIS Liaison Officer for France, see the INIS website for current contact and E-mail addresses; Physique des Plasmas
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Yagi, Eiichi
Proceedings of the international workshop on JHF science (JHF98). Vol. 2. Parallel sessions of K- and E-arena1998
Proceedings of the international workshop on JHF science (JHF98). Vol. 2. Parallel sessions of K- and E-arena1998
AbstractAbstract
No abstract available
Source
Chiba, J.; Furusaka, M.; Miyatake, H.; Sawada, S. (eds.); High Energy Accelerator Research Organization, Tsukuba, Ibaraki (Japan); 461 p; Aug 1998; p. 380-383; JHF98: International workshop on JHF science; Tsukuba, Ibaraki (Japan); 3-7 Mar 1998; Available from KEK(High Energy Accelerator Research Organization). Also available from the internet at URL http://www.kek.jp
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AbstractAbstract
No abstract available
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(c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
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Journal Article
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AbstractAbstract
[en] Differential cross sections for neutrons elastically scattered from 11B have been measured for 85 incident neutron energies for 2.6 <= Esub(n) <= 8.0 MeV corresponding to excitation in 12B of 5.7 to 10.7 MeV. The cross sections were measured at nine laboratory angles per energy from 200 to 1600 and show considerable resonance structure. These data, along with previously measured low-energy cross sections, have been analyzed for 0.1 <= Esub(n) <= 7.0 MeV with a multilevel-multichannel R-matrix program to make new assignments to states in 12B. The R-matrix calculation allows for change of l-value and for input in either j-j or L-S coupling schemes. A very good overall fit to the data is obtained over this wide range of excitation in 12B. Comparisons with existing theoretical work are discussed. (orig.)
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Journal Article
Journal
Nuclear Physics. A; ISSN 0375-9474;
; v. 340(1); p. 13-33

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AbstractAbstract
[en] The dependence of resonance scattered photon intensities on the molecular orientation of the target was observed using bremsstrahlung photons. This was achieved in a self-absorption measurement by employing a 11B target in the form of pyrolytic boron nitride (PBN). (orig.)
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Journal Article
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Phys. Lett., B; ISSN 0370-2693;
; v. 92(3/4); p. 286-288

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AbstractAbstract
[en] The form factors for elastic scattering of electrons by 10B and 11B and the inelastic form factor to the 6.02 MeV level in 10B are calculated with intermediate coupling wave functions in a projected Hartree-Fock basis. Good agreement with experiment is obtained. (Auth.)
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Journal Article
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Nuclear Physics. A; v. 299(1); p. 141-146
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Vengosh, A.; Raab, M.; Starinsky, A.; Kolodny, Y.; Chivas, A.; McCulloch, M.T.
Annual Meeting of the Israel Geological Society, 19901990
Annual Meeting of the Israel Geological Society, 19901990
AbstractAbstract
[en] Abstract only
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Source
Israel Geological Society, Jerusalem (Israel); 13 p; 1990; p. 83; Israel geological society annual meeting, 1990; Eilat (Israel); 23-26 Apr 1990
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Miscellaneous
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Laursen, K L; Fynbo, H O U; Howard, A M; Kirsebom, O S, E-mail: klj06@phys.au.dk2014
AbstractAbstract
[en] New data and preliminary results from an experimental study of the p + "1"1B reaction are presented. Using proton energies in the range of 167 – 170 keV the 2+ resonance in "1"2C at an excitation energy of 16.11 MeV was populated. Detecting the emitted a-particles in full kinematics allows us to study "1"2 C resonances and their properties. In addition to the 3-α break-up of the 16.11 MeV resonance we observe γ-transitions to lower lying resonances. Transitions to the 3"− state at 9.64MeV, the 1"− state at 10.84 MeV and the 1"+ state at 12.71 MeV are clearly seen. The transitions to the 1"− state has not been observed previously. In addition we see decays to structures of natural parity at excitation energies around 11-13 MeV. The results illustrate that the indirect detection of γ-decays is an effective technique for studying the low lying resonance spectrum of "1"2C
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3. International Workshop on State of the Art in Nuclear Cluster Physics; Yokohama (Japan); 26-30 May 2014; Available from http://dx.doi.org/10.1088/1742-6596/569/1/012073; Country of input: International Atomic Energy Agency (IAEA)
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Journal Article
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Journal of Physics. Conference Series (Online); ISSN 1742-6596;
; v. 569(1); [5 p.]

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BARYON REACTIONS, BARYONS, BORON ISOTOPES, CARBON ISOTOPES, CHARGED-PARTICLE REACTIONS, ELEMENTARY PARTICLES, ENERGY RANGE, ENERGY-LEVEL TRANSITIONS, EVEN-EVEN NUCLEI, FERMIONS, HADRON REACTIONS, HADRONS, ISOTOPES, LIGHT NUCLEI, NUCLEAR REACTIONS, NUCLEI, NUCLEON REACTIONS, NUCLEONS, ODD-EVEN NUCLEI, PARTICLE PROPERTIES, STABLE ISOTOPES, TARGETS
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Vengosh, A.; Starinsky, A.; Kolodny, Y.; Chivas, A.R.; McCullosh, M.T.
Australian National Univ., Canberra (Australia). Research School of Earth Sciences; Hebrew Univ., Jerusalem (Israel)
Annual Meeting of the Israel Geological Society, 19901990
Australian National Univ., Canberra (Australia). Research School of Earth Sciences; Hebrew Univ., Jerusalem (Israel)
Annual Meeting of the Israel Geological Society, 19901990
AbstractAbstract
[en] Abstract only
Primary Subject
Source
Israel Geological Society, Jerusalem (Israel); 13 p; 1990; p. 84; Israel geological society annual meeting, 1990; Eilat (Israel); 23-26 Apr 1990
Record Type
Miscellaneous
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Conference
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