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2 edition of Superior] 14C induced two proton transfer reactions on f-p shell nuclei found in the catalog.

Superior] 14C induced two proton transfer reactions on f-p shell nuclei

David Barker

Superior] 14C induced two proton transfer reactions on f-p shell nuclei

by David Barker

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Published by University of Birmingham in Birmingham .
Written in English


Edition Notes

Thesis (Ph.D.) - University of Birmingham, Dept of Physics.

Statementby David Barker.
ID Numbers
Open LibraryOL16534859M

At approximately what number of protons, or neutrons, does the ratio of protons to neutrons start to produce unstable nuclei? 20 Nuclei above the belt of stability can lower their neutron-to-proton . Theoretical Description of β-delayed Proton Emission of Proton Rich sd- and pf- shell nuclei Background Physics motivation Shell-model isospin non-conserving (INC) Hamiltonian Construction of INC Hamiltonian β-delayed proton emission sd-shell: 22Si, 23Si, 24Si, 25Si, pf-shell: 53Ni, 56Zn (see W. Richter’s talk, on Thursday Hall L).

proton induced reaction on gold at proton energy GeV. Energy spectra have been measured at 3 different angles: 35, 50 and o for Light Charged Particles (LCP, Z=2) and Intermediate Mass Fragments (IMFs, 3 Z 8) produced in the mentioned reaction. The PISA experimental setup and the particle identication method using silicon detectors are Author: Virginie Bollini. Abstract: In this work we present the results for the investigation of intermediate-mass fragment (IMF) production with the proton-induced reaction at MeV on U and Np target. The data were obtained with the LNR Phasotron UM Cyclotron at Joint Institute for Nuclear Research (JINR), Dubna, Russia. A total of 93 isotopes, in the mass range of 30 Cited by: 5.

Unbibium, also known as element or eka-thorium, is the hypothetical chemical element in the periodic table with the placeholder symbol of Ubb and atomic number Unbibium and Ubb are the temporary systematic IUPAC name and symbol respectively, which are used until the element is discovered, confirmed, and a permanent name is decided upon. In the periodic table of the elements, it is Group: n/a. Measurements of multinucleon transfer reactions of Xe + Pt for production of exotic nuclei Y.X. Watanabe et al. EMIS, Grand Rapids, May 11 - 15, KISS to explore neutron-rich nuclei around the last r-process bottleneck Y. Hirayama et al. Recent progress on r-process and nucleosynthesis, RIKEN, Nov. 25,


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Superior] 14C induced two proton transfer reactions on f-p shell nuclei by David Barker Download PDF EPUB FB2

The two-proton pickup reaction (14C, 16O) has been investigated at MeV on targets of 50Ti, 52Cr, 54Fe and at MeV on a target of 52Cr.

The prot Cited by: 2. Single-particle transfer reactions have recently been done on several p-shell nuclei l2) and the results showed good agreement with the theoretical spectroscopic factors given by Cohen and Kurath 13). We report on two additional single-particle transfer experiments and Cited by: NUCLEAR Nuclear Physics A () PHYSICS A North-Holland Stretched proton-neutron configurations in fp-shell nuclei * (I).

Experimental results of the (a, d) reaction U. Pister 1, R. Jahn, P. von Neumann-Cosel 2, P. Schenk, T.K. Trelle 1, D. Wenzel3, U. Wienands 4 Institut f Strahlen- und Kernphysik, Universit Bonn, NussaeD Bonn, Germany Received 10 March Cited by:   Angular distributions of the proton and neutron transfer reactions14C(16O,15N)15N and14C(16O,17O)13C leading to the ground states of the final nuclei were measured atE lab=20, 25 and 30 MeV.

A DWBA analysis was performed using the no-recoil approximation of Buttle and Goldfarb. All angular distributions, including the pronounced structures of the proton transfer arising from the fact Cited by: 2. The two-proton transfer reactions induced by on the targets with the N = 82 closed neutron shell show clear effects due to the proton pairing interaction.

The semiclassical properties of the reactions studied made a discussion of the enhancement factors in the two-proton transfer particularly easy and transparent, because the scattering Cited by: Spectroscopic factors for single-particle transfer are calculated from many-particle shell-model wave functions for 23 different transfer reactions onfp-shell nuclei.

A comparison of the present theory with the available experimental data is very successful. Subshell occupation numbers of target ground states are studied in : R. Mooy, P. Glaudemans. two-neutron transfer mechanism into56Ni using the pickup reaction 58Ni(p,t)56Ni. In addition the reliability of inverse kinematics reactions at low energy to study exotic nuclei was tested by the neutron transfer reactions t(40Ar,p)42Ar and d(54Fe,p)55Fe using tritium and deuterium targets, respectively, and by comparing the results with.

A systematic analysis of the two-neutron transfer induced by the (O18,O16) reaction indicates that the static deformation of target nuclei impacts the two-neutron transfer mechanism. View Show. Intermediate-energy inverse-kinematics one-proton pickup reactions on neutron-deficient fp-shell nuclei S.

McDaniel, 1,2A. Gade, light-ion-induced one- and two-nucleon transfer reactions on thin, stable targets at incident energies of several MeV per.

Abstract: Background: Low-energy transfer reactions in which a proton is stripped from a deuteron projectile and dropped into a target play a crucial role in the formation of nuclei in both primordial and stellar nucleosynthesis, as well as in the study of exotic nuclei using radioactive beam facilities and inverse kinematics.

Ab initio approaches have been successfully applied to describe the. one or two nucleons can be removed from the projectile or transferred between the target and projectile nuclei in their fast, surface-grazing collisions.

Classic examples of such spectroscopic direct reactions are light-ion-induced one- and two-nucleon transfer reactions on thin, stable targets at incident energies of several MeV per nucleon. 2.G Nuclear Physics A () ; North-Holland Publishing Co., Amsterdam Not to be reproduced by photoprint or microfilm without written permission from the publisher PROTON SEPARATION ENERGIES DERIVED FROM THE (d, 3He) REACTION ON f-p SHELL NUCLEI AT 52 MeV G.

MAIRLE, KASCHL, H. LINK, H. MACKH, U. SCHMIDT-ROHR and G. t Cited by: The nuc56Cr were populated to high spin following the reaction 48Ca(11B,pxn)xCr at a beam energy of MeV.

The level scheme of 55Cr has been confirmed and extended to Jπ=25/2+. The discovery and investigation of the new region of superheavy nuclei at the DGFRS separator based on fusion reactions of 48Ca with U–Cf target nuclei are reviewed. nuclei from 48Ca-induced reactions. a spherical nucleus will transform to a dumbbell configuration and divide into two fragments in approximately 10 −19 s.

This is the limit of stability of heavy nuclei. In the macroscopic theory (liquid-drop model), The effect of the proton shell. The half-lives and other characteristics for the emission of one proton halo nuclei, 8B, 11,12N, 17F, 23Al, 27,28P, and two proton halo nuclei, 9C, 17,18Ne, 20Mg, 29S from the SH parent isotopes.

the proton-transfer reaction 14N(17F,18Ne)13C. Some results were presented already [1]. For a precise DWBA analysis of the proton transfer reaction we need to determine reliable optical model potentials (OMP). For this purpose, elastic scattering cross sections for 14N(17F,17F)14N and 12C(17F,17F)12C were measured over an extended angular range.

A general theory of many-body diagonal and nondiagonal one-proton decays of spherical and deformed nuclei is developed on the basis of an approach not employing R-matrix theory in describing deep-subbarrier alpha and one-proton decays of nuclei but relying on integral formulas for the widths with respect to these decays.

With the aid of this theory and by means of a diagram Cited by: 3. The N=28 shell closure has been studied trough the one neutron transfer reaction on ^{44,46}Ar nuclei. Excitation energies of states in ^{45,47}Ar nuclei have been obtained, as well as their.

Abstract. The differential cross sections for the (3 He, d) reactions on 16 O nuclei at \(E_{3_{He} } = 42\) MeV and on 19 F and 26 Mg nuclei at \(E_{3_{He} } = \) MeV are measured for angles from the forward data and those from the literature are analyzed by using a procedure that combines the method of distorted waves and the elements of the dispersion by: 2.

The experimental mass distributions are similar for all studied reactions. The most probable mass of the heavy fission fragment for all target nuclei studied is close to the AH= (asymmetric mode S2).

The origin of this mode could be attributed to the deformed neutron-shell closure N≈88 in .malism. In proton induced reactions, the value of n0 is consistently taken as 3.

This may be interpreted as the projectile on interaction with the target nucleus excites one particle above the Fermi level leaving a hole in the Fermi level and hence the total of three excitons (2p+1h).

Similarly in the case of α induced reactions the value of n0 isFile Size: KB.Nuclei above the belt of stability (high neutron-to-proton ratios): These neutron-rich nuclei can lower their ratio and move toward the belt of stability by emitting a beta particle.

Beta emission decreases the number of neutrons and increases the number of protons in a nucleus, as shown in Equation