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AbstractAbstract
[en] The 40Ca(4He,8He)36Ca reaction has been used to provide the first observation of the nuclide 36Ca. The Q value and mass excess were found to be -57.58 +- 0.04 and -6.44 +- 0.04 MeV, respectively. The new mass completes four members of the A = 36 isobaric quintet and hence serves as a test of the isobaric multiplet mass equation
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Record Type
Journal Article
Journal
Phys. Rev., C; v. 15(6); p. 2028-2031
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Greene, J. P.
Argonne National Lab., IL (United States). Funding organisation: US Department of Energy (United States)1998
Argonne National Lab., IL (United States). Funding organisation: US Department of Energy (United States)1998
AbstractAbstract
[en] We give a description for the production of 13C foils and the preparation of an approximately 1 mg/cm2 thick target. A recent experiment to measure the mass of 36Ca via the 40Ca(4He,8He)36Ca reaction at the S800 magnetic spectrometer at MSU, needed a precise determination of the beam energy and calibration of the focal plane of the magnetic spectrometer in order to achieve the most accurate value for the 36Ca mass. The 1 mg/cm213C target was essential for these purposes. Target performance along with some preliminary results will also be discussed
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Secondary Subject
Source
18 Nov 1998; 10 p; 19. World Conference of the International Nuclear Target Development Society; Oak Ridge, TN (United States); 5-9 Oct 1998; W-31109-ENG-38; Also available from OSTI as DE00010937; PURL: https://www.osti.gov/servlets/purl/10937-34WWPL/webviewable/
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AbstractAbstract
[en] Complete text of publication follows. Isospin symmetry is a consequence of the approximate charge invariance of nucleon-nucleon forces. The strong interaction conserves the charge symmetry very well and the Coulomb energies are almost state-independent in a nucleus. The large bulk displacement energies produced by the monopole part of the Coulomb ?eld are approximately cancelled in the excitation energy differences of the mirror nuclei. As a result, energy spectra are quite analogous between mirror nuclei. A small Coulomb effect may remain, due to differences in the radii of the single particle states. Especially, when the proton states are weakly bound, the wave function of the protons in the last shell becomes wider due to larger penetration to the classically forbidden region and consequently the Coulomb energy decreases. In the neutron-deficient 36Ca, the 21+ state is expected to be unbound by about 500 keV, which may allow for a larger extension of the proton orbits. A measure of the increase of the proton radius may be the lowering of the energy of the 21+ state in 36Ca relative to the position of the same state in the mirror nucleus 36S. To check if this happens, an experiment was performed at GANIL in Caen, France. During the experiment the primary 40Ca beam of around 95 A x MeV was fragmented in the SISSI target. The resulting beam cocktail was purified in the 'α' spectrometer consisting of two dipole magnets and a degrader with the setting optimised for 37Ca. The fragments were identified event by event through a time-of-flight measurement between the spectrometer and the secondary 9Be target of 1072 μm thickness, in which further nucleons were removed at an energy of around 61 A x MeV. After passing through the target, the produced fragments were identified using the spectrometer SPEG by time-of-flight and energy loss measurements. To detect the emitted gamma rays, the Chateau de Cristal array consisting of 74 BaF2 scintillators was placed around the Be target. The Doppler-corrected gamma-ray spectrum obtained for 36Ca is shown in fig. 1. Using Gaussian fits for the peaks, the energy of the 2+ state in 36Ca has been determined to be E(2+) 3050(60) keV, 240 keV lower than the corresponding value in 36S much larger than the usual mirror energy differences, indicating a drip line effect. (author)
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Garcia, A.; Adelberger, E.G.; Magnus, P.V.; Swanson, H.E.; Wietfeldt, F.E.; Tengblad, O.
The Isolde Collaboration1995
The Isolde Collaboration1995
AbstractAbstract
[en] We measure the mass of the lowest T=2 state in 36K by observing β-delayed protons following the superallowed 36Ca decay and use this result to make a precise test of the isobaric multiplet mass equation
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Secondary Subject
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Journal Article
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BARYONS, BETA DECAY RADIOISOTOPES, BETA-PLUS DECAY RADIOISOTOPES, CALCIUM ISOTOPES, CATIONS, CHARGED PARTICLES, DECAY, ELEMENTARY PARTICLES, EVEN-EVEN NUCLEI, FERMIONS, HADRONS, HYDROGEN IONS, HYDROGEN IONS 1 PLUS, IONS, ISOTOPES, LIGHT NUCLEI, NUCLEAR DECAY, NUCLEI, NUCLEONS, ODD-ODD NUCLEI, POTASSIUM ISOTOPES, PROTONS, RADIOISOTOPES
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
Burger, A.; Azaiez, F.; Bourgeois, C.; Franchoo, S.; Ibrahim, F.; Verney, D.; Algora, A.; Dombradi, Z.; Fulop, Z.; Sohler, D.; Al-Khatib, A.; Bringel, P.; Engelhardt, C.; Hubel, H.; Bastin, B.; Benzoni, G.; Borcea, R.; Rotaru, F.; Stanoiu, M.; Clement, E.; Drouart, A.; Gorgen, A.; Korten, W.; Dalouzy, J.C.; Grevy, S.; Navin, A.; Roussel Chomaz, P.; Saint-Laurent, M.G.; Sorlin, O.; Stefan, I.2012
AbstractAbstract
[en] The cross section for the knock-out of a deeply bound valence neutron from 37Ca at an incident beam energy of 60 A MeV has been measured along with momentum distributions of the residual nuclei and? rays from the de-excitation of the first excited state in 36Ca. As for other cases of deeply bound nucleons studied using knock-out reactions, the reduction of the measured cross section compared to theoretical predictions is stronger than those observed for near-magic stable nuclei. Both the momentum distributions and the excitation energy of the first excited state in 36Ca indicate a sizable N = 16 gap. (authors)
Primary Subject
Source
Available from doi: http://dx.doi.org/10.1103/PhysRevC.86.064609; Country of input: France; 30 refs.
Record Type
Journal Article
Journal
Physical Review. C, Nuclear Physics; ISSN 0556-2813;
; v. 86; p. 064609.1-064609.5

Country of publication
ALKALINE EARTH ISOTOPES, BETA DECAY RADIOISOTOPES, BETA-PLUS DECAY RADIOISOTOPES, CALCIUM ISOTOPES, DIRECT REACTIONS, ENERGY, ENERGY LEVELS, EVEN-EVEN NUCLEI, EVEN-ODD NUCLEI, ISOTOPES, LIGHT NUCLEI, MATHEMATICAL MODELS, MILLISECONDS LIVING RADIOISOTOPES, NUCLEAR MODELS, NUCLEAR REACTIONS, NUCLEI, RADIOISOTOPES
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INIS VolumeINIS Volume
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Buerger, A.; Azaiez, F.; Stanoiu, M.
Funding organisation: European Community (Commission of the European Communities (CEC)); Bundesministerium fuer Bildung Wiessenschaft Forschung und Technologie, Bonn (Germany)2007
Funding organisation: European Community (Commission of the European Communities (CEC)); Bundesministerium fuer Bildung Wiessenschaft Forschung und Technologie, Bonn (Germany)2007
AbstractAbstract
[en] An experiment was performed to study excited states in neutron-deficient nuclei around Ca. After a first fragmentation of the primary beam, the one-neutron knockout reaction was used to produce 36Ca ions from the 37Ca secondary beam and in-beam γ rays were measured. The energy of the first excited 2+ state in 36Ca and the cross section for the 1-neutron knock-out reaction from 37Ca at ∼ 45 A MeV were obtained. The 2+ energy in 36Ca is compared to the mirror nucleus 36S to deduce information on the isospin dependence of the nuclear force near the proton drip line. Furthermore, for two other Tz=-2 nuclei, 28S and 32Ar, the deexcitation of the first 2+ states has been observed. (author)
Original Title
PACS numbers: 21.10.-k, 23.20.Lv, 27.30.+t
Primary Subject
Source
Zakopane Conference on Nuclear Physics; Zakopane (Poland); 4-10 Sep 2006; CONTRACT RII3-CT-2004-506065; BMBF CONTRACT 06BN109; Also available at http://th-www.if.uj.edu.pl/acta/; 12 refs., 3 figs.
Record Type
Journal Article
Literature Type
Conference
Journal
Acta Physica Polonica. Series B; ISSN 0587-4254;
; v. B38(4); p. 1353-1357

Country of publication
ALKALINE EARTH ISOTOPES, BEAMS, BETA DECAY RADIOISOTOPES, BETA-PLUS DECAY RADIOISOTOPES, CALCIUM ISOTOPES, DIRECT REACTIONS, ENERGY-LEVEL TRANSITIONS, EVEN-EVEN NUCLEI, EVEN-ODD NUCLEI, ISOTOPES, LIGHT NUCLEI, MILLISECONDS LIVING RADIOISOTOPES, MULTIPOLE TRANSITIONS, NUCLEAR REACTIONS, NUCLEI, RADIOISOTOPES, SPECTRA, STABLE ISOTOPES, SULFUR ISOTOPES
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INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
[en] Continuum-coupling correction to binding energies in neutron rich oxygen and fluorine isotopes and to excitation energies of 2+1 states in 36Ca and 36S mirror nuclei are studied using the real-energy continuum shell model. (author)
Original Title
PACS numbers: 21.60.Cs, 23.40.-s, 23.40.Hc, 25.40.Lw
Primary Subject
Source
30. Mazurian Lakes Conference on Physics; Piaski (Poland); 2-9 Sep 2007; Also available at http://th-www.if.uj.edu.pl/acta/; 15 refs., 5 figs., 2 tabs.
Record Type
Journal Article
Literature Type
Conference
Journal
Acta Physica Polonica. Series B; ISSN 0587-4254;
; v. B39(2); p. 389-400

Country of publication
ALKALINE EARTH ISOTOPES, BETA DECAY RADIOISOTOPES, BETA-MINUS DECAY RADIOISOTOPES, BETA-PLUS DECAY RADIOISOTOPES, CALCIUM ISOTOPES, ENERGY, EVEN-EVEN NUCLEI, ISOTOPES, LIGHT NUCLEI, MATHEMATICAL MODELS, MILLISECONDS LIVING RADIOISOTOPES, NUCLEAR MODELS, NUCLEI, RADIOISOTOPES, STABLE ISOTOPES, SULFUR ISOTOPES
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
External URLExternal URL
Lopez Jimenez, M.J.; Saint-Laurent, M.G.; Anne, R.; Daugas, J.M.; Lewitowicz, M.; Oliveira Santos, F. de; Trinder, W.; Angelique, J.C.; Grevy, S.; Aysto, J.; Jokinen, A.; Siiskonen, T.; Borcea, C.; Guillemaud-Mueller, D.; Grzywacz, R.; Nowacki, F.; Ostrowski, A.N.
Grand Accelerateur National d'Ions Lourds (GANIL), Lab. Commun IN2P3-CNRS, 14 - Caen (France)2000
Grand Accelerateur National d'Ions Lourds (GANIL), Lab. Commun IN2P3-CNRS, 14 - Caen (France)2000
AbstractAbstract
[en] The β-decay of the Tz = -2 nucleus 36Ca was studied at the LISE3 magnetic spectrometer at GANIL. Two new proton-emitting states have been detected by a new experimental method and the other nine βρ and βγ known transitions have been remeasured with improved resolution. A simulation with GEANT code has been applied to this experimental setup resulting a very useful tool for the analysis. A comparison with shell model calculations is given. (author)
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Source
2000; 4 p; 22 refs.
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Report
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ACCELERATORS, ALKALINE EARTH ISOTOPES, BETA DECAY, BETA DECAY RADIOISOTOPES, BETA-PLUS DECAY RADIOISOTOPES, CALCIUM ISOTOPES, CYCLIC ACCELERATORS, CYCLOTRONS, DECAY, EVEN-EVEN NUCLEI, HEAVY ION ACCELERATORS, ISOCHRONOUS CYCLOTRONS, ISOTOPES, LIGHT NUCLEI, MATHEMATICAL MODELS, NUCLEAR DECAY, NUCLEAR MODELS, NUCLEI, RADIOISOTOPES, SIMULATION
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Lalanne, Louis
Universite Paris-Saclay, Ecole doctorale no. 576 Particules, Hadrons, energie, Noyau, Instrumentation, Imagerie, Cosmos et Simulation - PHENIICS, Espace Technologique, Immeuble Discovery, Route de l'Orme aux Merisiers RD 128, 91190 Saint-Aubin (France); Faculte des sciences d'Orsay, CNRS, IJCLab, 91405, Orsay (France)2021
Universite Paris-Saclay, Ecole doctorale no. 576 Particules, Hadrons, energie, Noyau, Instrumentation, Imagerie, Cosmos et Simulation - PHENIICS, Espace Technologique, Immeuble Discovery, Route de l'Orme aux Merisiers RD 128, 91190 Saint-Aubin (France); Faculte des sciences d'Orsay, CNRS, IJCLab, 91405, Orsay (France)2021
AbstractAbstract
[en] The 36Ca nucleus has several fascinating properties linked to nuclear structure, with the study of isospin symmetry breaking effects and shell gap evolution at the proton drip-line. Moreover, the energy and structure of its excited states have an astrophysical interest in particular for the study of the key reaction 35K(p,γ)36Ca involved in the rp-process occurring in X-ray bursts. Isospin symmetry is one of the most fundamental symmetries in nuclei and is related to charge independence of the strong interaction. If the isospin symmetry is strictly preserved, the level schemes of mirror nuclei (with exchanged number of protons and neutrons) should be identical. The Coulomb interaction breaks the isospin symmetry and gives rise to shift in excitation energy between analogue states in mirror nuclei called Mirror Energy Differences (MED). In the case of the mirror pair 36Ca-36S, the Coulomb interaction act as a magnifying glass of the nuclear structure, which effects are scrutinized in this work. The nuclear astrophysics motivation is linked to the indirect measurement of the 35K(p,γ)36Ca reaction rate to better understand the luminosity profile emitted during Type Ia X-ray burst. Indeed, this reaction has been identified as one of the ten (p,γ) reactions that could significantly impact the shape of the calculated X-ray burst light curve. The present experiment aims at studying the energy, spin values, proton spectroscopic factors and widths of the excited states of astrophysical interest in 36Ca. These relevant spectroscopic information are used to reinvestigate the 35K(p,γ)36Ca reaction rate and its corresponding uncertainties and determine its impact on the X-ray burst's light curve. 36Ca was studied at GANIL by means of the 37Ca(p,d) and 38Ca(p,t) transfer reactions at about 50 MeV/nucleons. Radioactive beams of 37Ca and 38Ca, produced with the LISE spectrometer, were tracked by two sets of position sensitive detectors before impinging on a liquid Hydrogen cryogenic target. 6 MUST2 telescopes (Silicon DSSD and CsI crystals) were used to identify and measure light particles emitted during the transfer reaction. An assembly of three detectors (ionization chamber, drift chamber and plastic scintillator) were used to detect the outgoing heavy ion in the exit channel. The detection of both light and heavy ejectiles ensured a complete determination of the kinematics of the reaction, an assignment of the transferred angular momentum L of all states produced, and a very reduced amount of background. The full spectroscopy of 36Ca has been obtained and new excited states have been identified. Colossal MED have been observed in the newly discovered intruder states of 36Ca. The proton correlation, viewed from the two-proton decay of highly excited states, has been also studied. With the experimental results and the help of shell-model calculations, the 35K(p,γ)36Ca reaction rate has been re-evaluated and constrained with meaningful statistical uncertainty. Besides 36Ca, the first study of the spectroscopy of 35Ca (including its mass measurement) will also be presented. (author)
[fr]
Le noyau de 36Ca possede plusieurs proprietes fascinantes liees a la structure nucleaire, avec l'etude des effets de brisure de la symetrie d'isospin et de l'evolution de l'espacement des couches a la limite de non-liaison. De plus, l'energie et la structure de ses etats excites ont un interet astrophysique notamment pour l'etude de la reaction 35K(p,γ)36Ca qui est impliquee dans le processus rp se produisant dans les sursauts X. La symetrie isospin est l'une des symetries les plus fondamentales du noyau et est liee a l'independance de charge de l'interaction forte. Si la symetrie d'isospin est strictement preservee, les schemas de niveaux des noyaux miroirs (avec un nombre echange de protons et de neutrons) devraient etre identiques. L'interaction coulombienne brise la symetrie d'isospin et donne lieu a un decalage de l'energie d'excitation entre les etats analogues des noyaux miroirs, appele difference d'energie miroir. Dans le cas de la paire miroir 36Ca-36S, l'interaction coulombienne agit comme une loupe de la structure nucleaire, dont les effets sont examines dans ce travail. La motivation d'astrophysique nucleaire est liee a la mesure indirecte du taux de la reaction 35K(p,γ)36Ca afin de mieux comprendre le profil de luminosite emis lors des sursauts X de Type Ia. En effet, cette reaction a ete identifiee comme l'une des dix reactions (p,γ) qui pourraient avoir un impact significatif sur la forme de la courbe de lumiere calculee des sursauts X. La presente experience vise a etudier l'energie, les valeurs de spin, les facteurs spectroscopiques protons et les largeurs des etats excites d'interet astrophysique dans le 36Ca. Les informations spectroscopiques pertinentes sont utilisees pour reexaminer le taux de la reaction 35K(p,γ)36Ca et ses incertitudes correspondantes et determiner son impact sur la courbe de lumiere des sursauts X. Le 36Ca a ete etudie au GANIL au moyen des reactions de transfert 37Ca(p,d) et 38Ca(p,t) a environ 50 MeV/nucleons. Des faisceaux radioactifs de 37Ca et 38Ca, produits avec le spectrometre LISE, ont ete mesures par deux ensembles de detecteurs sensibles a la position avant d'interagir avec une cible cryogenique d'hydrogene liquide. 6 telescopes MUST2 (cristaux de silicium DSSD et CsI) ont ete utilises pour identifier et mesurer les particules legeres emises pendant la reaction de transfert. Un ensemble de trois detecteurs (chambre d'ionisation, chambre de derive et scintillateur en plastique) ont ete utilises pour detecter l'ion lourd sortant dans le canal de sortie. La detection des ejectiles legers et lourds a permis une determination complete de la cinematique de la reaction, une attribution du moment angulaire transfere L de tous les etats produits, et une reduction significative du bruit de fond. La spectroscopie complete du 36Ca a ete obtenue et de nouveaux etats excites ont ete identifies. De tres grandes differences d'energie miroir ont ete observees dans les nouveaux etats intrus du 36Ca. La correlation des protons, vue a partir de la desintegration en deux protons des etats hautement excites, a egalement ete etudiee. Grace aux resultats experimentaux et aux calculs de modeles en couche, le taux de reaction 35K(p,γ)36Ca a ete reevalue et fortement contraint avec une incertitude statistique pertinente. Outre le 36Ca, la premiere etude de la spectroscopie du 35Ca (y compris la mesure de sa masse) sera egalement presentee. (auteur)Original Title
Etude du 36Ca: structure nucleaire et implications astrophysiques
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Source
24 Sep 2021; 216 p; 123 refs.; Available from the INIS Liaison Officer for France, see the INIS website for current contact and E-mail addresses; These de doctorat de l'Universite Paris-Saclay, Specialite: Structure et reactions nucleaires
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Miscellaneous
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Thesis/Dissertation
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Country of publication
ALKALINE EARTH ISOTOPES, APPROXIMATIONS, BARYON REACTIONS, BETA DECAY RADIOISOTOPES, BETA-PLUS DECAY RADIOISOTOPES, BORN APPROXIMATION, CALCIUM ISOTOPES, CALCULATION METHODS, CHARGED PARTICLES, CHARGED-PARTICLE REACTIONS, CROSS SECTIONS, DIFFERENTIAL CROSS SECTIONS, ENERGY LEVELS, EVEN-EVEN NUCLEI, EVEN-ODD NUCLEI, FUNCTIONS, HADRON REACTIONS, ISOTOPES, LIGHT NUCLEI, MILLISECONDS LIVING RADIOISOTOPES, NUCLEAR REACTIONS, NUCLEI, NUCLEON REACTIONS, ODD-EVEN NUCLEI, POTASSIUM ISOTOPES, RADIOISOTOPES
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Greene, John P.; Thomas, George E.; Garcia, Alejandro; Komives, Alexander; Stoner, John O., E-mail: greene@anl.gov1999
AbstractAbstract
[en] We give a description for the production of 13C foils and the preparation of an approximately 1-mg/cm2 thick target. A recent experiment to measure the mass of 36Ca, via the 40Ca(4He,8He)36Ca reaction, required precise determination of the accelerated beam energy and calibration of the focal plane of a magnetic spectrometer to achieve the most accurate value for the 36Ca mass. A 1 mg/cm213C target was essential for these purposes. Target preparation and performance along with some preliminary results will be discussed
Primary Subject
Source
S0168900299006518; Copyright (c) 1999 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: Pakistan
Record Type
Journal Article
Journal
Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment; ISSN 0168-9002;
; CODEN NIMAER; v. 438(1); p. 52-57

Country of publication
ALKALINE EARTH ISOTOPES, BEAMS, BETA DECAY RADIOISOTOPES, BETA-MINUS DECAY RADIOISOTOPES, BETA-PLUS DECAY RADIOISOTOPES, CALCIUM ISOTOPES, CARBON ISOTOPES, CHARGED-PARTICLE REACTIONS, DEPOSITION, DIMENSIONS, EVEN-EVEN NUCLEI, EVEN-ODD NUCLEI, HELIUM ISOTOPES, ION BEAMS, ISOTOPES, LIGHT NUCLEI, MEASURING INSTRUMENTS, MILLISECONDS LIVING RADIOISOTOPES, NUCLEAR REACTIONS, NUCLEI, RADIOISOTOPES, SPECTROMETERS, STABLE ISOTOPES, TARGETS
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