Calculation of Neutron Nuclear Data on Rubidium and Strontium Isotopes for JENDL-4

Shibata, Kozo; Ichihara, Akira; Kunieda, Satoshi

doi:10.1080/18811248.2010.9711670

Cited by 6 publications

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References 20 publications

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“…Although they provide important activation data in a wide energy range, the measured data are sometimes considerably larger than other experimental data or evaluated data, as seen in Refs. [39,54,55]. After changing various model parameters, it was found that fitting to the data of Bormann et al [53] led to poor reproduction of the other reaction cross sections of 69 Ga.…”

Section: Comparison With Experimental and Other Evaluated Data In Thementioning

confidence: 99%

Evaluation of neutron nuclear data for gallium

Shibata

2013

Journal of Nuclear Science and Technology

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Neutron nuclear data on 69,71 Ga have been evaluated for the next version of the Japanese Evaluated Nuclear Data Library (JENDL) general purpose file in the energy region from 10 −5 eV to 20 MeV. The resolved resonance parameters at negative energies were adjusted so as to reproduce measured thermal capture cross sections. The statistical model was applied to calculate the cross sections above the resolved resonance region. In the calculations, coupled-channel optical model parameters were used for neutrons. Preequilibrium and direct-reaction processes were taken into account in addition to the compound process. The present evaluation is consistent with available experimental data. The evaluated data are compiled into an ENDF-formatted data file.

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Section: Comparison With Experimental and Other Evaluated Data In Thementioning

confidence: 99%

Evaluation of neutron nuclear data for gallium

Shibata

2013

Journal of Nuclear Science and Technology

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Nuclear Data Sheets for A = 87

Johnson

Kulp

2015

Nuclear Data Sheets

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The evaluated experimental data are presented for 14 known nuclides of mass 87 (Ga, Ge, As, Se, Br, Kr, Rb, Sr, Y, Zr, Nb, Mo, Tc, Ru). New datasets have been added for 87 Ga, 87 Se, 87 Kr, 87 Rb, 87 Sr, 87 Nb, and 87 Tc.The observation of and new lifetime measurements for 87 As at the NSCL Coupled Cyclotron Facility and the Oak Ridge Isochronous Cyclotron at the HRIBF-ORNL Facility are included in the adopted levels for this isotope.The new evaluation also includes an isomeric level at unknown energy for 8 7 Tc, changes to the adopted levels f o r 8 7 N b b a s e d o n n e w l y p u b l i s h e d d a t a i n c l u d i n g a n e x t e n s i o n o f t h e h i g h s p i n l e v e l s a n d n e w l i f e t i m e m e a s u r e m e n t s , a n d n e w h e a v y i o n d a t a f o r 8 7 K r . N e w h i g h s p i n l e v e l s f o r 8 7 R b w e r e o b s e r v e d , i n d i c a t i n g p o s s i b l e n e u t r o n c o r e e x c i t a t i o n s . I n a d d i t i o n , t h e g r o u n d s t a t e l i f e t i m e o f 8 7 R b h a s b e e n r e v i s e d a n d a n e w lifetime measurement for an excited level in 8 7 Rb indicates a possible proton spin flip. New excitation levels have been observed for the first time in 8 7 Se. New direct and precise measurement of atomic masses of 8 7 Tc, 8 7 Mo, 8 7 Nb, 8 7 Zr, 8 7 Mo and 8 7 Tc have greatly improved the Q value landscape in this mass region. This work supersedes the previous A=87 evaluation published in 2002He09, and Q values for all isotopes were updated to incorporate the mass evaluation in 2012Wa38. General Policies and Organization of Material: see http://www.nndc.bnl.gov/nds/NDSPolicies.pdf. G e n e r a l C o m m e n t s : I n s p i t e o f s i g n i f i c a n t e x p e r i m e n t a l w o r k o n t h e i s o b a r i c n u c l e i o f t h i s m a s s c h a i n s o m e d e f i c i e n c i e s r e m a i n . T h e i d e n t i f i c a t i o n o f 8 7 R u i s o t o p e w a s d o n e v i a p r o j e c t i l e f r a g m e n t a t i o n . H o w e v e r , excited state data remain nonexistent. Fragmentation data revealed new levels in 8 7 Tc, but the connection tothe ground state has yet to be clarified and excited levels have yet to be established for 8 7 As 8 7 Ga, and 8 7 Ge.The ground state spin and parity of 87 Br was changed to reflect new in-line measurements, but is tentative and more experimental work would be useful for further clarification.Cutoff Date: Literature available up to July 27, 2015 has been consulted. A c k n o w l e d g m e n t s : T h e e v a l u a t o r s a r e g r a t e f u l t o t h eThe statistical analysis of γ -ray data and deduced level schemes is carried out through computer codes available a t N N D C , B N L w e b s i t e : w w w . n n d c . b n l . g o v . T h e d i r e c t f e e d i n g s t o e x c i t e d s t a t e s i n β -a n d ε d e c a y s h a v e g e n e r a l l y b e e n c o m p u t e d f r o m I ( γ + c e ) i n t e n s i t y b a l a n c e s a t e a c h l e v e l ; t h e a s s o c i a t e d l o g f t v a l u e s a r e calculated usi...

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Study on (n,2n) and (n,p) reactions of strontium nucleus

Yi̇ği̇t

Tel

2015

Nuclear Engineering and Design

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Calculation of Neutron Nuclear Data on Rubidium and Strontium Isotopes for JENDL-4

Cited by 6 publications

References 20 publications

Evaluation of neutron nuclear data for gallium

Evaluation of neutron nuclear data for gallium

Nuclear Data Sheets for A = 87

Study on (n,2n) and (n,p) reactions of strontium nucleus

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