Nuclear Spectroscopy in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi mathvariant="normal">Cr</mml:mi></mml:mrow><mml:mrow><mml:mn>52</mml:mn></mml:mrow></mml:msup></mml:mrow></mml:math>,<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi mathvariant="normal">Cr</mml:mi></mml:mrow><mml:mrow><mml:mn>53</mml:mn></mml:mrow></mml:msup></mml:mrow></mml:math>, and<mml:math xmlns:mml="http:

Whitten, C. A.

doi:10.1103/physrev.156.1228

Cited by 76 publications

(6 citation statements)

References 51 publications

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“…In the HOM calculation the second excited 2 +, 4 +, 6 + states are neutron excitations (cf. Table 2) which is roughly in agreement with the neutron transfer data [20,22,23]. These show that oneneutron excitations out of the .t'7/2 shell become important around 4 MeV whereas such proton excitations occur a few MeV higher [24].…”

Section: The Nuclei 5~ and 54fesupporting

confidence: 88%

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Hermitian operator method calculation in thepf-shell

Allaart

Müther

1978

Z Physik A

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Excitations in p f-shell nuclei that may be described by a one-body Hermitian operator are calculated. For the ground states highly correlated wave functions are used, which were obtained by means of the Generator Coordinate Method (GCM). It is found that the results of the Hermitian Operator Method (HOM) for the excited states are sometimes superior to those of the GCM, especially for the two-quasiparticle states in the N = 28 nuclei 5~ 52Cr, 54Fe. Typically vibrational or quasi-rotational 4 + and 6 + states in 46'48Ti, 5~ are not well reproduced by the HOM, as expected. A good account for the B(E2) values of transitions to the ground state can be given for all nuclei. It is concluded that the HOM is quite useful as a supplementary calculation and as a check for complicated calculations like the GCM.

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Section: The Nuclei 5~ and 54fesupporting

confidence: 88%

“…In the (f 7/2) 4 model McCullen, Bayman and Zamick [20]. Possibly a 5 + state at 4.02MeV is the other member of the (./"7/2 1, p3/2) neutron multiplet.…”

Section: W Nucleus 52crmentioning

confidence: 97%

Hermitian operator method calculation in thepf-shell

Allaart

Müther

1978

Z Physik A

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“…18). Then, 18 excited states up to the excitation energy of 5.557 MeV [109][110][111] were involved in calculation of 56 Fe(n, α) 53 Cr pickup excitation function. The same calculations concerned also the analysis of α-emission angular distributions and an angleintegrated spectrum at 14.1 MeV [90].…”

Section: Fe(n α) 53 Crmentioning

confidence: 99%

Validation of an optical potential for incident and emitted low-energy $$\alpha $$-particles in the $$A\sim 60$$ mass range

Avrigeanu

2021

Eur. Phys. J. A

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A consistent set of statistical-model input parameters, validated by analysis of various independent data, makes possible the assessment of an $$\alpha $$ α -particle optical model potential [Phys. Rev. C 90, 044612 (2014)] also for nucleon-induced $$\alpha $$ α -emission within the $$A \sim 60$$ A ∼ 60 mass-number range. The advantage of recent data for low-lying states feeding is taken as well. Consideration of additional reaction channels leading to increase of the $$\alpha $$ α -emission beyond the statistical predictions has concerned the pickup direct interaction and Giant Quadrupole Resonance similar features.

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“…No transitions were observed to the 2.650 keu (0 +) excited level either. This latter fact can be explained by the 2p--2h character of this level [15]. Furthermore, in most of the ~ spectra the levels of J~ = 2 +, 4 + dominated by the configuration of seniority r = 2 are preferred to those dominated by r -~ 4.…”

Section: V(p ~)~2crmentioning

confidence: 86%

Investigations of γ spectra of certain (p, γ) resonances

et al. 1971

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The investigation of ? spectra of the isobaric analogue resonances gives useful information about the structure of the nuclei. Our original airo was to look for isobaric analogue resonances in (p, 7,) reactions on several nuclei, and to study the systematics of their ~ spectra. ExperimentalThe experiments were performed with the proton beato of the 2.5 MeV Van de Graaff generator with ah energy spread and calibration uncertainty of about 1 keV. The excitation functions ~vere measured with a 3" • 3" NaJ(T1) scintillation counter while the ? spectra were taken by a 15 cm 3 Ge(Li) detector located at 90 o. The targets were evaporated on thick Ta and Au backings from natural metals, except 44Ca when the target material was enriched 44CACO3. The thiekness of the targets was about 1--2 keV, for 2 MeV protons. 44Ca(p, ?)45ScThis reaction has been investigated by several authors [1, 2]. Surprisingiy, the measured exeitation functions did not show any striking resonance in the region of bombarding proton energy corresponding to the position of the isobar analogue of the Ex = 1904 keV (3/2-) state in the 4~Ca nucleus. From (d, p) stripping measurements [3] it is known that this level has a relatively large spectroscopic factor, namely (2J + 1)S n = 2.56. This fact suggests the idea that the isobaric analogue of this level should be found in the 45Sc nucleus. From the estimation of the Coulomb displacement energy, the expected position of the IAR is about 1670 keV bombarding proton energy. We have also measured the excitation function ( Fig. 1) in the 1.550--1750 keV proton energy region, in 2 keV steps with ah overall resolution of about 3 keV. As is seen

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Nuclear Spectroscopy inCr52,Cr53, and
C. A. Whitten
¹

Cited by 76 publications

References 51 publications

Hermitian operator method calculation in thepf-shell

Hermitian operator method calculation in thepf-shell

Validation of an optical potential for incident and emitted low-energy $$\alpha $$-particles in the $$A\sim 60$$ mass range

Investigations of γ spectra of certain (p, γ) resonances

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Nuclear Spectroscopy inCr52,Cr53, andC. A. Whitten1

Cited by 76 publications

References 51 publications

Hermitian operator method calculation in thepf-shell

Hermitian operator method calculation in thepf-shell

Validation of an optical potential for incident and emitted low-energy $$\alpha $$-particles in the $$A\sim 60$$ mass range

Investigations of γ spectra of certain (p, γ) resonances

Contact Info

Product

Resources

About

Nuclear Spectroscopy inCr52,Cr53, and
C. A. Whitten
¹