Systematic study of electric quadrupole excitations in the stable even mass Sn nuclei

Bryssinck, J.; Govor, L. I.; Ponomarev, V. Yu.; Bauwens, F.; Beck, Olof; Belić, D.; Brentano, P. von; Frenne, D. De; Eckert, T.; Fransen, C.; Govaert, K.; Herzberg, R.‐D.; Jacobs, E.; Kneißl, U.; Maser, H.; Nord, A.; Pietralla, N.; Pitz, H. H.; Werner, V.

doi:10.1103/physrevc.61.024309

Cited by 51 publications

(15 citation statements)

References 21 publications

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“…In our study this transition is weakly populated, and a reasonable reproduction of the angular distribution is obtained assuming an L = 6 transfer, so the present assignment is J π = 6 + . This level must therefore differ from the J π = 1, 2 + level at 3758.51 keV observed in the (n,n γ ) [32,33] and (γ ,γ ) [12] reactions, as reported in the adopted level scheme [7].…”

Section: Mevmentioning

confidence: 65%

“…This level must therefore differ from the J π = 1, 2 + level at 3871.1 keV, which decays exclusively to the ground state 0 + . The 3871.1-keV level is inferred from nuclear resonance fluorescence measurements [12], as reported in the adopted level scheme [7].…”

Section: Mevmentioning

confidence: 99%

“…(iii) Nuclear resonance fluorescence techniques [12], which have determined level spins and parities from measurements of photon scattering cross sections, angular distributions, and linear polarizations or azimuthal asymmetries. (iv) 114 Cd(α,2nγ ) studies, which have identified high-spin neutron quasiparticle excitations [13] as well as collective bands associated with 2p-2h excitations [14] up to levels with spin and parity J π =12 + .…”

Section: Introductionmentioning

confidence: 99%

“…(ii) Inelastic scattering of protons [16,31] and deuterons [18], and Coulomb excitation [20,21], including inbeam γ -ray spectroscopy using the (n,n γ )reaction [32,33]. (iii) Nuclear resonance fluorescence experiments [12,34]. (iv) Identification of a long-lived 122 Sn 10 + isomer (62 µs) among the products of 124 Sn + 76 Ge at 325 MeV [35].…”

Section: Introductionmentioning

confidence: 99%

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High-resolution measurement of theSn118,124(p,
Guazzoni
¹
,
Zetta
²
,
Covello
³

et al. 2011
Phys. Rev. C
42
5
35
0
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The 118,124 Sn(p,t) 116,122 Sn reactions have been investigated in high-resolution experiments at incident proton energies of 24.6 and 25 MeV, respectively. Angular distributions for 55 transitions to levels of 116 Sn and 63 transitions to levels of 122 Sn, up to excitation energies of ∼3.850 and ∼4.000 MeV, respectively, have been measured. The spin and parity identification was carried out by means of a distorted-wave Born approximation (DWBA) analysis, performed by using conventional Woods-Saxon potentials. A shell-model study of 116 Sn and 122 Sn nuclei was performed using a realistic two-body effective interaction derived from the CD-Bonn nucleon-nucleon potential. The doubly magic nucleus 132 Sn was assumed as a closed core, with the 16 and 10 valence neutron holes occupying the five levels of the 50-82 shell. The energy spectra have been calculated and compared with the experimental ones, and the theoretical two-nucleon spectroscopic amplitudes, evaluated in a truncated seniority space, have been used in the microscopic DWBA calculation of some cross-section angular distributions of both reactions.

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Section: Mevmentioning

confidence: 65%

Section: Mevmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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High-resolution measurement of theSn118,124(p,
Guazzoni
¹
,
Zetta
²
,
Covello
³

et al. 2011
Phys. Rev. C
42
5
35
0
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“…], ou medir a polarização dos fótons espalhados, experimentos ( ) γ γ r , [Go94a,Kn92,Kn95,Br00a,Ko05].…”

Section: Polarização E Paridadeunclassified

Bremsstrahlung de elétrons no microtron do IFUSP: medidas, simulação e proposta de aplicação ao estudo da ressonância fluorescente nuclear

Pino¹

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The results of the first experiments carried out in the new electron accelerator of the Linear Accelerator Laboratory (LAL) of the Physics Institute of Universidade de São Paulo are reported here. A 1.9 MeV beam line, which allows the use of the injector beam for experimental physics, was added to the original accelerator design. Electron bremsstrahlung spectra for Ag and Au thin targets observed at 30 o and 60 o with respect to the beam direction were collected in a HPGe coaxial detector, whose dimensions, including crystal inner hole dimensions and dead layer thickness, were estimated by means of combined experimental measurements and Monte Carlo simulations with the MCNP code, to evaluate the detector response function to perform the deconvolution of the spectrum. Cross sections for bremsstrahlung yield were determined for the entire measured energy range (100-1910 keV) and for the tip region (1700-1970 keV). The results in the tip region are in agreement with MCNPX and PENELOPE predictions. The possible causes for the disagreement at energies lower than 1800 keV are discussed. The design of a Nuclear Resonance Fluorescence (NRF) setup, aiming the study of dipolar excitations in nuclei with bremsstrahlung photons when the Microtron electron energy reaches 10 MeV, is also shown. The setup was designed with the characteristics of the Microtron building and facilities in mind, and searches to minimize the radiation caused by scattered photons and neutrons from photonuclear reactions. The behavior of the NRF setup elements: converter, collimator, detector shielding and photon beam dump, were studied by simulation as functions of their characteristics-dimensions, shapes, materials-using the MCNPX code. The spectral intensity to be observed by the photon detector in the designed NRF setup with a 27 Al reference target, typical for NRF measurements, was assessed by simulation and shows the feasibility of this sort of experiment with the Microtron. vi vii Dedicatória A minha tia Haydee, a meus pais Lucy, Aldo e Rodolfo, a meu amor Fátima, e à maior alegria de minha vida, Marquitos... A mi tía Haydee, a mis padres Lucy, Aldo y Rodolfo, a mi amor Fátima, y a la mayor alegría de mi vida, Marquitos… viii ix Agradecimentos À Prof. Nora pelos prazos estendidos, pela ajuda insuperável em muitas coisas alem do doutorado, por fazer deste trabalho quase seu segundo Phd., sem ela simplesmente eu não estaria escrevendo estes agradecimentos, Ao Prof. Vito pela linha de baixa energia, pelas correções e sugestões e pelo grande tempo dedicado, A Vicky, sempre agradecido, sem ela para mi o Brasil, fora o carnaval de Rio, as brigas no vôlei das cubanas e as brasileiras..., mas só na TV, Ao Prof. Marcos, meu primeiro orientador, sempre exigente, preciso e disposto a ajudar, A Alexandre e Alfredo por fazerem o Microtron funcionar, por conseguirem superar as múltiplas inconveniências, A Roberto e ao pessoal da oficina mecânica, sempre ágeis e atentos, À Wanda Gabriel Pereira Engel do LAFN pelo preparo dos alvos, À Prof. Márcia de Almeida ...

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50-Tin

Sukhoruchkin¹,

Soroko²

Landolt-Börnstein - Group I Elementary Particles, Nuclei and Atoms

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Systematic study of electric quadrupole excitations in the stable even mass Sn nuclei

Cited by 51 publications

References 21 publications

High-resolution measurement of theSn118,124(p,
Guazzoni
¹
,
Zetta
²
,
Covello
³

et al. 2011
Phys. Rev. C
42
5
35
0
View full text Add to dashboard Cite

High-resolution measurement of theSn118,124(p,
Guazzoni
¹
,
Zetta
²
,
Covello
³

et al. 2011
Phys. Rev. C
42
5
35
0
View full text Add to dashboard Cite

Bremsstrahlung de elétrons no microtron do IFUSP: medidas, simulação e proposta de aplicação ao estudo da ressonância fluorescente nuclear

50-Tin

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Systematic study of electric quadrupole excitations in the stable even mass Sn nuclei

Cited by 51 publications

References 21 publications

High-resolution measurement of theSn118,124(p,Guazzoni1, Zetta2, Covello3 et al. 2011Phys. Rev. C425350View full textAdd to dashboardCite

High-resolution measurement of theSn118,124(p,Guazzoni1, Zetta2, Covello3 et al. 2011Phys. Rev. C425350View full textAdd to dashboardCite

Bremsstrahlung de elétrons no microtron do IFUSP: medidas, simulação e proposta de aplicação ao estudo da ressonância fluorescente nuclear

50-Tin

Contact Info

Product

Resources

About

High-resolution measurement of theSn118,124(p,
Guazzoni
¹
,
Zetta
²
,
Covello
³

et al. 2011
Phys. Rev. C
42
5
35
0
View full text Add to dashboard Cite

High-resolution measurement of theSn118,124(p,
Guazzoni
¹
,
Zetta
²
,
Covello
³

et al. 2011
Phys. Rev. C
42
5
35
0
View full text Add to dashboard Cite