Nuclear Data Sheets for A = 95

Basu, Sourav; Mukherjee, G.; Sonzogni, A. A.

doi:10.1016/j.nds.2010.10.001

Cited by 89 publications

(92 citation statements)

References 220 publications

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“…Beyond the first peak, however, there is a slight systematic underestimation compared to the general trend, if the data of Kondtrat'ev et al are disregarded. Also, the peak positions are slightly shifted towards lower energies (16,30 and 50 MeV, respectively).…”

Section: Nb Processmentioning

confidence: 92%

Excitation functions of natZr+p nuclear processes up to 70MeV: New measurements and compilation

Szelecsényi

Steyn

Vermeulen

et al. 2015

Nuclear Instruments and Methods in Physics Research Section B:

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Section: Nb Processmentioning

confidence: 92%

Excitation functions of natZr+p nuclear processes up to 70MeV: New measurements and compilation

Szelecsényi

Steyn

Vermeulen

et al. 2015

Nuclear Instruments and Methods in Physics Research Section B:

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“…It has also been reported in other (d,p) measurements [37,38]. For reasons unknown, this level has not been included in the ENSDF [25]. A 237-keV transition, with a large branching ratio of 70% was reported in a fusionevaporation reaction measurement [39] and tentatively assigned to the 1056-keV level [25].…”

Section: Level: 1056 Kevmentioning

confidence: 89%

“…It has also been shown that spins of well-populated higher-lying levels, where the level density is typically large, can be successfully extracted from particle and γ-ray gated angular distribution measurements [24]. In the case of 95 Mo, the spins of many low-lying levels have been determined extensively and repeatedly in many excellent measurements [25]. None of the above mentioned methods will add significantly improved or new information from our data.…”

Section: Traditional Methodsmentioning

confidence: 95%

“…The level scheme is summarized in Table I, and includes all levels and transitions observed in this work. Comparisons to previous results as compiled in the Evaluated Nuclear Structure Data File (ENSDF) [25] are made where possible. For clarity, important features of low-lying levels that differ from the ENSDF [25] are elaborated on in more detail in the text.…”

Section: A Levels and γ-Ray Transitionsmentioning

confidence: 99%

“…Comparisons to previous results as compiled in the Evaluated Nuclear Structure Data File (ENSDF) [25] are made where possible. For clarity, important features of low-lying levels that differ from the ENSDF [25] are elaborated on in more detail in the text. The uncertainties in γ-ray energies range from 1 keV for transitions below 1 MeV, and gradually increase to 3 keV for the highest observed transition energy at 6064 keV.…”

Section: A Levels and γ-Ray Transitionsmentioning

confidence: 99%

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γ-ray decay from neutron-bound and unbound states inMo95and a novel technique for spin determination

et al. 2016

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The emission of γ rays from neutron-bound and neutron-unbound states in 95 Mo, populated in the 94 Mo(d,p) reaction, has been investigated. Charged particles and γ radiation were detected with arrays of annular silicon and Clover-type high-purity Germanium detectors, respectively. Utilizing proton-γ and proton-γ-γ coincidences, the 95 Mo level scheme was greatly enhanced with 102 new transitions and 43 new states. It agrees well with shell model calculations for excitation energies below ≈2 MeV. From proton-γ coincidence data, a new method for the determination of spins of discrete levels is proposed. The method exploits the suppression of high-angular momentum neutron emission from levels with high spins populated in the (d,p) reaction above the neutron separation energy. Spins for almost all 95 Mo levels below 2 MeV (and for a few levels above) have been determined with this method.

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Monte Carlo calculated calibration settings for commercially available nuclear medicine ionization chambers

2022

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Purpose A method for calculating nuclear medicine ionization chamber (NMIC) calibration settings with a Monte Carlo model is presented and validated against physical measurements. This work provides Monte Carlo–calculated calibration settings for select isotopes with no current manufacturer recommendations and a method by which NMIC manufacturers or standards laboratories can utilize highly detailed specifications to calculate comprehensive lists of calibration settings for general isotopes. Methods A Monte Carlo model of a Capintec PET series NMIC was developed and used to calculate the chamber response to relevant radioactive decay products over an energy range relevant to nuclear medicine. The photon detection efficiency (PDE) of a high purity germanium (HPGe) detector was modeled and physically validated to facilitate measurements of NMIC calibration settings with HPGe detector spectroscopy. Modeled NMIC response to various isotopes was compared against spectroscopic measurements and National Institute of Standards and Technology (NIST)‐validated calibration settings to validate the Monte Carlo–calculated NMIC calibration settings. Results HPGe detector PDE was validated against the physical measurements to within 3.3%$3.3\%$ at 95%$95\%$ confidence and used to measure calibration settings, which produced activity readings 0.7%$0.7\%$, 1.6%$1.6\%$, 0.8%$0.8\%$, and 1.0%$1.0\%$ different than those validated by NIST for 11$^{11}$C, 18$^{18}$F, 68$^{68}$Ga, and 64$^{64}$Cu respectively. The Monte Carlo model of the NMIC reproduced measured calibration settings to within 7%$7\%$ at 95%$95\%$ confidence for isotopes with a sufficiently small yield of low energy photons. Conclusions A method of calculating NMIC calibration settings with Monte Carlo modeling has been developed and validated against HPGe detector spectroscopy. NMIC manufacturers or standards laboratories can use more detailed specifications of the chamber geometries to extend the applicability of this method to a wider range of isotopes.

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Nuclear Data Sheets for A = 95

Cited by 89 publications

References 220 publications

Excitation functions of natZr+p nuclear processes up to 70MeV: New measurements and compilation

Excitation functions of natZr+p nuclear processes up to 70MeV: New measurements and compilation

γ-ray decay from neutron-bound and unbound states inMo95and a novel technique for spin determination

Monte Carlo calculated calibration settings for commercially available nuclear medicine ionization chambers

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