Nuclear Data Sheets for A = 55

Junde, Huo

doi:10.1016/j.nds.2008.03.001

Cited by 70 publications

(56 citation statements)

References 307 publications

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“…(8) for 65 Cu. The quoted energy value from nuclear data sheets [15,16] for the 438 keV transition is 438.614 ± 0.018, while for 1115, it is 1115.546 ± 0.004 keV. In our measurements, we obtained somewhat lower results of 438.512 ± 0.005 and 1115.696 ± 0.008 keV, respectively.…”

Section: Results and Data Analysiscontrasting

confidence: 70%

“…The result obtained by the fit is 13.51 ± 0.03 h, while the expected value is 13.74 ± 0.02 h [15]. As for the transition level, there is a discrepancy; but, unlike before, this systematic error is well understood in terms of the multiisotope nature of our sample where the presence of isotopes with different half-lives leads to changes in the net area time dependence.…”

Section: Results and Data Analysismentioning

confidence: 54%

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The results of the first photonuclear reaction performed in Turkey: the zinc example

Boztosun¹,

Đapo²,

Özmen³

et al. 2014

Turk J Phys

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Abstract:We have investigated the decays of several zinc isotopes produced by photonuclear reactions, which were induced by bremsstrahlung photon beams from a clinical e-linac. A photon beam of 18 MeV endpoint energy was directed at a target consisting of primarily zinc isotopes in their natural abundances. Subsequently, the induced decays of unstable zinc isotopes were measured with an HPGe detector twice, once shortly after irradiation and once on the following day. Decays of Zn-63, Zn-65, Zn-69m, and Cu-67 were measured and fitted. In addition, the gamma energy levels of the daughters of these decays were measured with good accuracy. All of the measurements were consistent with established data within error bars.

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Section: Results and Data Analysiscontrasting

confidence: 70%

Section: Results and Data Analysismentioning

confidence: 54%

The results of the first photonuclear reaction performed in Turkey: the zinc example

Boztosun¹,

Đapo²,

Özmen³

et al. 2014

Turk J Phys

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“…Furthermore, 55 Co is the only odd-mass cobalt isotope where the ordering between the 9/2 − and the 11/2 − states is reversed. Even if by only 3 keV, the 11/2 − state is lower in energy, in contrast to the other known odd-mass isotopes [14]. By adding neutrons, cobalt isotopes reach the subshell closure at N = 40.…”

Section: Introductionmentioning

confidence: 91%

Spectroscopy of odd-mass cobalt isotopes toward theN=40subshell closure and shell-model description of spherical and deformed states

Recchia¹,

Lenzi²,

Lunardi³

et al. 2012

Phys. Rev. C

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The neutron-rich cobalt isotopes up to A = 67 have been studied through multinucleon transfer reactions by bombarding a 238 U target with a 460-MeV 70 Zn beam. Unambiguous identification of prompt γ rays belonging to each nucleus has been achieved using coincidence relationships with the ions detected in a high-acceptance magnetic spectrometer. The new data are discussed in terms of the systematics of the cobalt isotopes and interpreted with large-scale shell-model calculations in the fpgd model space. In particular, very different shapes can be described in 67 Co, at the edge of the island of inversion at N = 40, where a low-lying highly deformed band coexists with a spherical structure.

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“…Here, t 1/2 = 2.7 yr is the half-life of 55 Fe (the parent of 55 Mn), p γ = 0.244 (Junde 2008) is the probability per 55 Fe decay of producing a 5.9 keV Mn K α photon, ε 0 is the rest energy of the line, ρ is the mass density of the ejecta at position r, δ is the Dirac delta function, m 55 is the atomic mass of 55 Co and X 0 55 is the sum of the mass fractions of 55 Co and 55 Fe at t = 0 (i.e. immediately after explosion).…”

Section: Radiative Transfer Simulationsmentioning

confidence: 99%

“…These X-rays are emitted when the atomic electron configuration of the daughter nucleus 55 Mn relaxes to eliminate Kshell vacancies. Electron capture of 55 Fe produces a line doublet with energies of 5.888 keV (8.2 %) and 5.899 keV (16.2 %) (Junde 2008). Using three-dimensional hydrodynamical simulations and subsequent radiative transfer calculations, we determine the respective line fluxes for two explosion models -a violent merger of two WDs with a sub-Chandrasekhar mass primary, and a delayed detonation in a near-Chandrasekhar mass WD.…”

Section: Introductionmentioning

confidence: 99%

5.9-keV Mn K-shell X-ray luminosity from the decay of 55Fe in Type Ia supernova models

Seitenzahl¹,

Krauß²,

Diehl³

et al. 2014

Monthly Notices of the Royal Astronomical Society

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We show that the X-ray line flux of the Mn K α line at 5.9 keV from the decay of 55 Fe is a promising diagnostic to distinguish between Type Ia supernova (SN Ia) explosion models. Using radiation transport calculations, we compute the line flux for two three-dimensional explosion models: a near-Chandrasekhar mass delayed detonation and a violent merger of two (1.1 and 0.9 M ⊙ ) white dwarfs. Both models are based on solar metallicity zero-age main sequence progenitors. Due to explosive nuclear burning at higher density, the delayeddetonation model synthesises ∼3.5 times more radioactive 55 Fe than the merger model. As a result, we find that the peak Mn K α line flux of the delayed-detonation model exceeds that of the merger model by a factor of ∼4.5. Since in both models the 5.9 keV X-ray flux peaks five to six years after the explosion, a single measurement of the X-ray line emission at this time can place a constraint on the explosion physics that is complementary to those derived from earlier phase optical spectra or light curves. We perform detector simulations of current and future X-ray telescopes to investigate the possibilities of detecting the X-ray line at 5.9 keV. Of the currently existing telescopes, XMM-Newton/pn is the best instrument for close ( 1 − 2 Mpc), non-background limited SNe Ia because of its large effective area. Due to its low instrumental background, Chandra/ACIS is currently the best choice for SNe Ia at distances above ∼2 Mpc. For the delayed-detonation scenario, a line detection is feasible with Chandra up to ∼3 Mpc for an exposure time of 10 6 s. We find that it should be possible with currently existing X-ray instruments (with exposure times 5 × 10 5 s) to detect both of our models at sufficiently high S/N to distinguish between them for hypothetical events within the Local Group. The prospects for detection will be better with future missions. For example, the proposed Athena/X-IFU instrument could detect our delayed-detonation model out to a distance of ∼5 Mpc. This would make it possible to study future events occurring during its operational life at distances comparable to those of the recent supernovae SN 2011fe (∼6.4 Mpc) and SN 2014J (∼3.5 Mpc).

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Nuclear Data Sheets for A = 55

Cited by 70 publications

References 307 publications

The results of the first photonuclear reaction performed in Turkey: the zinc example

The results of the first photonuclear reaction performed in Turkey: the zinc example

Spectroscopy of odd-mass cobalt isotopes toward theN=40subshell closure and shell-model description of spherical and deformed states

5.9-keV Mn K-shell X-ray luminosity from the decay of 55Fe in Type Ia supernova models

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