Observation of new neutron rich nuclei29F,35,36Mg,38,39Al,40,41Si,43,44P,45?47S,46?49Cl, and49?51Ar from the interactions of 55 MeV/U48Ca+Ta

Guillemaud‐Mueller, D.; Penionzhkevich, Yu. É.; Anne, R.; Artukh, A.G.; Bazin, D.; Borrel, V.; Détraz, C.; Guerreau, D.; Gvozdev, B.A.; Jacmart, J.C.; Jiang, D. X.; Калинин, А.; Kamanin, V.V.; Kutner, V. B.; Lewitowicz, M.; Lukyanov, S. M.; Mueller, A. C.; Châu, Nguyễn Ngọc; Pougheon, F.; Richard, A.; Saint‐Laurent, M. G.; Schmidt‐Ott, W. D.

doi:10.1007/bf01289774

Cited by 18 publications

(37 citation statements)

References 12 publications

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“…These parameters had been used already for describing a large set of data in the energy has been performed with an incident 22Ne beam impinging onto a 332 mg/cm a 181Ta target. The spectrometer LISE [13] has been designed to separate and to transport such fragment beams: a first 45 ~ dipole of maximum magnetic rigidity LISE has allowed, so far, the identification of numerous new isotopes at the limits of particle stability [14,15] and the spectroscopy of 7 lines [16], /?-delayed protons [17] and/3-delayed neutrons [18]. The preparation and separation of secondary beams is treated more specifically in [19].…”

Section: Smentioning

confidence: 99%

Total cross sections of reactions induced by neutron-rich light nuclei

Saint‐Laurent

Anne

Bazin

et al. 1989

Z. Physik A - Atomic Nuclei

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Total nuclear reaction cross-sections are determined by means of a 4 re-7 method. The results cover a wide span of targets for various stable beams. The validity of the method is shown in a combined systematics including also the results of transmission-type experiments. The data are very well described by the formula developed by Kox et al. The same method is applied to secondary fragment beams produced from a 44 MeV/u 22Ne beam on a 332 mg/cm 2 181Ta target. Using the LISE spectrometer the fragments 4'6He, [6][7][8][9][7][8][9][10][11][12] are analyzed and transported to interact with a 199.4 mg/cm 2 Cu target surrounded by a 4rc-7 counter. The measured total reaction cross-sections oR are discussed in terms of the reduced strong absorption radius ro and compared with other experimental results.

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Section: Smentioning

confidence: 99%

Total cross sections of reactions induced by neutron-rich light nuclei

Saint‐Laurent

Anne

Bazin

et al. 1989

Z. Physik A - Atomic Nuclei

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“…4, where the half-lives of 21 new neu- I i i I I I I I I I I I I I I I I I I i I QRPA-Calculation 9 9 9 9 9 9 9 o 9 9 ~ o 9 9 9 9 9 9 0- tron-rich isotopes unknown at the time of calculation are compared with our theoretical values. In the region of neutron-rich light nuclei much progress has been achieved due to the work at Caen at GANIL [36,45]. The fragmentation of 4~ 48Ca and 86Kr beams of intermediate energy is a fruitful source for producing and studying light neutron-rich isotopes.…”

Section: Ii3 Qrpa Predictionsmentioning

confidence: 99%

“…The fragmentation of 4~ 48Ca and 86Kr beams of intermediate energy is a fruitful source for producing and studying light neutron-rich isotopes. A number of new isotopes [45] and halflives [36][37][38] are reported. Figure 5 illustrates the improvements of the second generation microscopic calculation in this mass region (see also Fig.…”

Section: Ii3 Qrpa Predictionsmentioning

confidence: 99%

Microscopic calculations of beta decay far from stability

Staudt

Bender

Muto

et al. 1989

Z. Physik A - Atomic Nuclei

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Beta decay properties of nuclei far from stability are of decisive importance for the understanding of the element synthesis in the universe and the determination of the age of the universe by means of cosmochronometers. A new large scale microscopic calculation of/?--decay half-lives up to the neutron drip line is presented. This new approach uses the proton-neutron quasiparticle random phase approximation with a Gamow-Teller residual interaction.

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“…Possible modifications of the shell structure with neutron excess raise important questions related to the surprisingly large shift in the neutron drip line between the O and F isotopes [7,8]. Cross shell p-sd excitations are known to be essential in the structure of nuclei in this region.…”

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confidence: 99%

p−sdShell Gap Reduction in Neutron-Rich Systems and Cross-Shell Excitations inO20

et al. 2005

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Excited states in 20 O were populated in the reaction 10 Be( 14 C,α) at Florida State University. Charged particles were detected with a particle telescope consisting of 4 annularly segmented Si surface barrier detectors and γ radiation was detected with the FSU γ detector array. Five new states were observed below 6 MeV from the α-γ and α-γ-γ coincidence data. Shell model calculations suggest that most of the newly observed states are core-excited 1p-1h excitations across the N = Z = 8 shell gap. Comparisons between experimental data and calculations for the neutron-rich O and F isotopes imply a steady reduction of the p-sd shell gap as neutrons are added.

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Observation of new neutron rich nuclei29F,35,36Mg,38,39Al,40,41Si,43,44P,45?47S,46?49Cl, and49?51Ar from the interactions of 55 MeV/U48Ca+Ta

Abstract: After magnetic separation, identification through time of flight and 5E x E measurements has allowed the observation of the new nuclei, 29F, 35'36Mg, 3s'39A1, 4~ 43,44p, 45'46'47S, 46'4v'4s'49C1, 49'5~ from the interaction of a 4SCa beam of 55 MeV/u with tantalum targets.

Cited by 18 publications

References 12 publications

Total cross sections of reactions induced by neutron-rich light nuclei

Total cross sections of reactions induced by neutron-rich light nuclei

Microscopic calculations of beta decay far from stability

p−sdShell Gap Reduction in Neutron-Rich Systems and Cross-Shell Excitations inO20

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