Level densities and thermodynamical quantities of heated<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mmultiscripts><mml:mi mathvariant="normal">Mo</mml:mi><mml:mprescripts /><mml:none /><mml:mrow><mml:mn>93</mml:mn><mml:mo>−</mml:mo><mml:mn>98</mml:mn></mml:mrow></mml:mmultiscripts></mml:math>isotopes

Chankova, R.; Schiller, A.; Agvaanluvsan, U.; Algin, E.; Bernstein, L. A.; Guttormsen, M.; Ingebretsen, F.; Lönnroth, T.; Messelt, S.; Mitchell, G. E.; Rekstad, J.; Siem, S.; Larsen, A. C.; Voinov, A.; Ødegård, S. W.

doi:10.1103/physrevc.73.034311

Cited by 65 publications

(52 citation statements)

References 45 publications

(75 reference statements)

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“…(8) over J is plotted in Fig. 6 together with the experimental data on the total LD determined from the 97 Mo( 3 He, αγ ) 96 Mo reaction [25]. It is clear that these experimental data on LD are in excellent The integrated TSC intensities obtained from these DICE-BOX simulations are shown in Fig.…”

Section: E1mentioning

confidence: 83%

Two-step γ cascades following thermal neutron capture inMo95

et al. 2008

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A strong enhancement of the photon strength function at low γ -ray energies was recently reported for several Mo isotopes. To study this enhancement further we have measured the spectra of two-step γ cascades following thermal neutron capture in 95 Mo. These spectra were compared with simulations of the γ decay of 96 Mo performed with the aid of the DICEBOX algorithm. Simulations with a large number of model combinations of photon strength functions for E1, M1, and E2 radiation are not consistent with the strong enhancement observed in the 96 Mo( 3 He, 3 He γ ) 96 Mo and 97 Mo( 3 He, αγ ) 96 Mo reactions. Predictions based on a combination of E1, M1, and E2 photon strength functions with no enhancement of the photon strength functions at low γ -ray energies are in good agreement with the two-step γ cascade data.

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Section: E1mentioning

confidence: 83%

Two-step γ cascades following thermal neutron capture inMo95

et al. 2008

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“…To fill in this gap, the Oslo Cyclotron group has developed the so-called Oslo method, which enables the extraction of both level density and γ-ray strength function from the distribution of primary γ rays at various initial excitation energies. The method has been thoroughly tested on nuclei in the rare-earth region [6,7,8], and has also been successfully extended to other mass regions [9,10,11,12].…”

Section: Introductionmentioning

confidence: 99%

Nuclear level densities and γ-ray strength functions inSc44,45

et al. 2007

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The scandium isotopes 44,45 Sc have been studied with the 45 Sc( 3 He,αγ) 44 Sc and 45 Sc( 3 He, 3 He ′ γ) 45 Sc reactions, respectively. The nuclear level densities and γ-ray strength functions have been extracted using the Oslo method. The experimental level densities are compared to calculated level densities obtained from a microscopic model based on BCS quasiparticles within the Nilsson level scheme. This model also gives information about the parity distribution and the number of broken Cooper pairs as a function of excitation energy. The experimental γ-ray strength functions are compared to theoretical models of the E1, M1, and E2 strength, and to data from (γ,n) and (γ,p) experiments. The strength functions show an enhancement at low γ energies that cannot be explained by the present, standard models.

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“…The Oslo method has previously been applied for rare earth nuclei, obtaining information on the level density and average γ-decay properties in this mass region [6,7]. Recently, the method has been extended to other mass regions like Fe, Mo, V and Sc [8,9,10,11,12]. In order to check the validity of the method in cases where nuclei have low level density and strong Porter-Thomas fluctuations [13], the 27,28 Si nuclei were studied with gratifying results [14].…”

Section: Introductionmentioning

confidence: 99%

Level density andγ-decay properties of closed shell Pb nuclei

Syed¹,

Guttormsen²,

Ingebretsen³

et al. 2009

Phys. Rev. C

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The level densities and γ-ray strength functions of 205−208 Pb have been measured with the Oslo method, utilizing the ( 3 He, 3 He ′ γ) and ( 3 He, αγ) reactions on the target nuclei 206 Pb and 208 Pb. The extracted level densities are consistent with known discrete levels at low excitation energies. The entropies and temperatures in the micro-canonical ensemble have been deduced from the experimental level density. An average entropy difference of ∆S ∼ 0.9k B has been observed between 205 Pb and 206 Pb. The γ-ray strength functions in 205−208 Pb have been extracted and compared with two models; however, none of them describe the data adequately. Intermediate structures have been observed in the γ-ray strength functions for γ-ray energies below neutron threshold in all the analyzed Pb nuclei. These structures become less pronounced while moving from the doubly-magic nucleus 208 Pb to 205 Pb.

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Level densities and thermodynamical quantities of heatedMo93−98isotopes

Cited by 65 publications

References 45 publications

Two-step γ cascades following thermal neutron capture inMo95

Two-step γ cascades following thermal neutron capture inMo95

Nuclear level densities and γ-ray strength functions inSc44,45

Level density andγ-decay properties of closed shell Pb nuclei

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