Heavy residues following<i>5–10</i>MeV/nucleon<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi mathvariant="normal">−</mml:mi></mml:mrow><mml:mprescripts /><mml:mrow /><mml:mrow><mml:mn>12</mml:mn></mml:mrow><mml:mrow /><mml:mrow /></mml:mmultiscripts></mml:mrow></mml:math>and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi mathvariant="normal">−</mml:mi></mml:mrow

Kossakowski, R.; Jastrzbski, J.; Rymuza, P.; Skulski, W.; Gizon, A.; André, S.; Genevey, J.; Gizon, J.; Barci, V V

doi:10.1103/physrevc.32.1612

Cited by 39 publications

(33 citation statements)

References 42 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…2 we show the dependence of the mass release A A on the compound nucleus excitation energy for A ~ 60 nuclei, as measured in the present work and in [7]. It has been shown in [1] that in heavy-ion induced reactions in the rare earth region the mass release AA is different (for a given excitation energy) when the CN system is produced by light heavy-ions (12C, V4N) or by 4~ projectiles. In the rare-earth case AA would be correlated with the mean thermal energy above the yrast line Eth rather than with the compound nucleus excitation energy E~N.…”

Section: Discussionmentioning

confidence: 91%

“…This is shown in Fig. 4, where the rare-earth AA-values of [1] are plotted as a function of the thermal energy Eth = E~N -Er ~ The total energy removed by a gammaray cascade E t~ = E~ ~ + E~ was calculated with the rigidbody moment of inertia and the maximum angular momentum taken from the classical trajectory model [9] with ]12C § JS~Smols2Sm ". +~t~N ..... …”

Section: Discussionmentioning

confidence: 99%

“…14 of [1]. Maximum angular momentum was taken from the classical trajectory model [8] with modifications described in [ 1] and [ 10]. It was assumed that the statistical gamma rays removed constant part of the excitation energy E, = 9 MeV modifications described in [1] and [10].…”

Section: O~ ' 50mentioning

confidence: 99%

“…It is well established by now that for rare-earth compound nuclei y-radiation is the most efficient way of removing angular momentum while particles, especially evaporated neutrons, remove rather small amounts of angular momentum. The quantity, which is closely connected with the mean angular momentum left in the residual nuclei after particle evaporation [ 1 ] is the cross-section-weighted average mass AA removed from the compound nucleus. As shown by Kossakowski et al [ 1 ], in the rare-earth region the dependence of AA on compound nucleus (CN) excitation energy E~ reflects the mean initial CN angular momentum.…”

Section: Introductionmentioning

confidence: 99%

“…The quantity, which is closely connected with the mean angular momentum left in the residual nuclei after particle evaporation [ 1 ] is the cross-section-weighted average mass AA removed from the compound nucleus. As shown by Kossakowski et al [ 1 ], in the rare-earth region the dependence of AA on compound nucleus (CN) excitation energy E~ reflects the mean initial CN angular momentum. Thus, for projectiles of different mass leading to formation of similar CN the AA values at a given E* N are different.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Mass and charge release by the evaporation of particles from compound nuclei around mass 60

Skulski

Fornal

Broda

et al. 1992

Z. Physik A - Hadrons and Nuclei

Self Cite

View full text Add to dashboard Cite

Reaction product cross sections have been measured for reactions of 4He projectile with 54'5617e, 58Ni and 59C0 targets in the bombarding energy range 14-27 MeV. The cross-section-weighted average charge A Z and mass AA removed from the compound system were deduced and compared with results reported for heavy-ion induced reactions. Variation ofA A with E* N is independent of the initial angular momentum of compound nucleus in the A = 60 mass region in contrary to the rare-earth region. This would suggest a strong angular momentum removal from the compound nucleus by evaporation of particles for A ,~ 60 nuclei. The average evaporated charge AZ depends on both the CN excitation energy E~N and the compound nucleus N and Z numbers. The AA and AZ dependence on excitation energy and the projectile-target combination can be understood in terms of the statistical model calculations.

show abstract

Section: Discussionmentioning

confidence: 91%

Section: Discussionmentioning

confidence: 99%

Section: O~ ' 50mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Mass and charge release by the evaporation of particles from compound nuclei around mass 60

Skulski

Fornal

Broda

et al. 1992

Z. Physik A - Hadrons and Nuclei

Self Cite

View full text Add to dashboard Cite

show abstract

Study of the yrast band in the doubly odd156Tm

Sun

Zhang

et al. 1995

Z. Physik A - Hadrons and Nuclei

View full text Add to dashboard Cite

The yrast band in the doubly odd 156Tm nucleus was studied through 144Sm (19F,2p5n)156Tm reaction at beam energy of 105MeV. Several high-spin states of 156Tm were identified and the highest spin of the band with configuration 7r7/2"[523] @vl/2+ [660] could be built up to spin 2511. The level structure shows the onset of a non-or weak collectivity which generally appears at neutron number of 87 in neutron-deficient rare-earth nuclei. PACS: 23.20.Lv, 27.70.+q Nuclei in the neutron-deficient rare-earth region have been of considerable interest during the past few years. One reason is that nuclei in the light rare-earth region can hold the highest angular momentum possible without fissioning, and therefore are attractive for studies of highspin states in nuclei. In transitional region, nuclei with neutron number N>88 generally exhibit strong collectivity due to their prolate shape whereas those with N<86 more appears as aligned single-particle configuration with noncollective rotation. In this region one may also expect the coexistence of different nuclear shapes and study shape evolution, described by collective and non-collective rotational models. The doubly odd nucleus, 156Tm with N=87, makes a good candidate for such studies.The present note reports on an experiment performed with five HpGe-BGO Compton-Suppressed spectrometers and a 14 elements ball of BGO detectors. The levels of 156Tm were populated by using the 144Sm(19F,2p5n) 156Tm fusion-evaporation reaction with a 105MeV 19F beam provided by the HI-13 tandem accelerator of China Institute of Atomic Energy(CIAE), and a 1.0mg/cm 2 144Sm target. Single 3,-ray spectra were collected at beam energies of 85, 90, 95, 100, and 105MeV for excitation function measurement. A )'-),-BGO coincidence experiment was performed at beam energy of 105MeV and beam current of 10nA. A total of 107 events, each with at least two Compton-Suppressed HpGe detectors and two BGO detectors to be required in coincidence, were recorded for off-line analysis. Besides 156Tm, three other nuclei were produced in this experiment with appreciable intensity from 4n, p3n and 2p3n reactions (159Lu and 158, 159yb), resulting in accidental degeneracies with a number of Vrays in 156Tm. However, much information on the contaminant lines from 159Lu(4n channel) was known from earlier studies[I], as well as the level structures of 158, 159yb well studied by other laboratories [2,3].Before our investigation, a few levels had been identified in 156Tm [4]. From our experiment, a partial level scheme of 156"I'm was established as shown in figure 1 and a coincidence-spectrum gated by 595 keV is shown in figure 2.The level ordering was made by considering the ),-ray intensity balance obtained by gating on the V-7-BGO coincidence matrix, and with additional information obtained from excitation functions. The results may be considered preliminary since no definite spins and parities can be assigned to the levels. However, certain clues to the band structures can be obtained from systematic inform...

show abstract

Nuclear and chemical data for life sciences

Maiti

2013

J Radioanal Nucl Chem

View full text Add to dashboard Cite

Heavy residues following5–10MeV/nucleon−12and−

Cited by 39 publications

References 42 publications

Mass and charge release by the evaporation of particles from compound nuclei around mass 60

Mass and charge release by the evaporation of particles from compound nuclei around mass 60

Study of the yrast band in the doubly odd156Tm

Nuclear and chemical data for life sciences

Contact Info

Product

Resources

About