نتایج جستجو برای: delayed neutron

تعداد نتایج: 146806  

Journal: :Physical review letters 2016
R Caballero-Folch C Domingo-Pardo J Agramunt A Algora F Ameil A Arcones Y Ayyad J Benlliure I N Borzov M Bowry F Calviño D Cano-Ott G Cortés T Davinson I Dillmann A Estrade A Evdokimov T Faestermann F Farinon D Galaviz A R García H Geissel W Gelletly R Gernhäuser M B Gómez-Hornillos C Guerrero M Heil C Hinke R Knöbel I Kojouharov J Kurcewicz N Kurz Yu A Litvinov L Maier J Marganiec T Marketin M Marta T Martínez G Martínez-Pinedo F Montes I Mukha D R Napoli C Nociforo C Paradela S Pietri Zs Podolyák A Prochazka S Rice A Riego B Rubio H Schaffner Ch Scheidenberger K Smith E Sokol K Steiger B Sun J L Taín M Takechi D Testov H Weick E Wilson J S Winfield R Wood P Woods A Yeremin

The β-delayed neutron emission probabilities of neutron rich Hg and Tl nuclei have been measured together with β-decay half-lives for 20 isotopes of Au, Hg, Tl, Pb, and Bi in the mass region N≳126. These are the heaviest species where neutron emission has been observed so far. These measurements provide key information to evaluate the performance of nuclear microscopic and phenomenological mode...

Journal: :Physical Review C 2022

Beta-delayed neutron emission and $\ensuremath{\beta}$-delayed fission ($\ensuremath{\beta}\mathrm{df}$) probabilities were calculated for heavy, neutron-rich nuclei using the Los Alamos coupled quasiparticle random-phase approximation plus Hauser-Feshbach ($\mathrm{QRPA}+\mathrm{HF}$) approach. In this model, compound nucleus is initially populated by $\ensuremath{\beta}$ decay followed throug...

Journal: :iranian journal of radiation research 0
kakavand 1 department of physics, zanjan university, zanjan, iran ghafourian atomic energy organization of iran, tehran, iran haji-shafeieha 1 department of physics, zanjan university, zanjan, iran

background: miniature neutron sources with high neutron flux have abundant applications in medicine, industry and researches. the most important general characteristic of miniature neutron sources is their diameter which is 3mm in average. in this research, we have surveyed and designed an am-be miniature neutron source fabrication. materials and methods: this investigation resulted in creation...

Journal: :basic and clinical cancer research 0
hoda darestani 1nuclear engineering department, science and research unit, azad university, tehran, i.r. iran hassan ali nedaie radiotherapy oncology department, cancer institute, tehran university of medical sciences, tehran, i.r. iran azim arbabi radiation oncology department, imam hussein medical center, faculty of medicine, shahid beheshti university of medical sciences, tehran, i.r. iran kheirollah mohammadi nuclear engineering department, amirkabir industrial university, tehran, i.r. iran mahmood allahverdi radiotherapy oncology department, cancer institute, tehran university of medical sciences, tehran, i.r. iran arjang shahvar agricultural, medical and industrial research school, karaj, i.r. iran

background : in spite of clinically useful photon and electron beams, high energy linacs produce secondary particles such as neutrons (photo-neutron production). neutrons have important roles during treatment with high energy photons in terms of protection and dose escalation. in this project, neutron dose equivalent of 18 mv varian accelerators is calculated by tld600 and tld700. materials and...

2016
Nobuya Nishimura Zsolt Podolyák Dong-Liang Fang Toshio Suzuki

Impact of the first-forbidden β decay on the production of A ∼ 195 r-process peak a r t i c l e i n f o a b s t r a c t First-forbidden transition Neutron emission QRPA We investigated the effects of first-forbidden transitions in β decays on the production of the r-process A ∼ 195 peak. The theoretical calculated β-decay rates with β-delayed neutron emission were examined using several astroph...

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