Accumulation of the Hf-178m2 isomeric nuclei through spallation with internediate-energy protons of tantalum and rhenium targets.

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F02%3A49020173" target="_blank" >RIV/61389005:_____/02:49020173 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Accumulation of the Hf-178m2 isomeric nuclei through spallation with internediate-energy protons of tantalum and rhenium targets.

Popis výsledku v původním jazyce

The productivity of the spallation reactionc at proton energies of 100-660 MeV for accumulation of the radioactive isotopes and isomers has been studied experimentally. Spectra of Ta and Re targets actived at Dubna synchrocyclotron were measured using the methods of radiochemistry and gamma spectroscopy, Many radioactive products of the spallation and fission reactions are indentified, and their yields are compared with the LAHET code simulations. Cross-sections cm and isomer-to ground state rations sigma(m)/sigma(g) are deduced for nuclear isomers, in particular, for high-spin isomers, as Hf-178m2, Hf-179m2 and Lu-177. Spin distributions for the spallation-residue nuclei are estimated to understand the sigma(m)/sigma(g), ratios. Possibilities to optimize the methods for the long-lived isomers production are discussed, and it would be a necessary step on theway to accululate Such exotic radionuclides in milligram amout under reasonable cost and radiation safety conditions.

Název v anglickém jazyce

Accumulation of the Hf-178m2 isomeric nuclei through spallation with internediate-energy protons of tantalum and rhenium targets.

Popis výsledku anglicky

The productivity of the spallation reactionc at proton energies of 100-660 MeV for accumulation of the radioactive isotopes and isomers has been studied experimentally. Spectra of Ta and Re targets actived at Dubna synchrocyclotron were measured using the methods of radiochemistry and gamma spectroscopy, Many radioactive products of the spallation and fission reactions are indentified, and their yields are compared with the LAHET code simulations. Cross-sections cm and isomer-to ground state rations sigma(m)/sigma(g) are deduced for nuclear isomers, in particular, for high-spin isomers, as Hf-178m2, Hf-179m2 and Lu-177. Spin distributions for the spallation-residue nuclei are estimated to understand the sigma(m)/sigma(g), ratios. Possibilities to optimize the methods for the long-lived isomers production are discussed, and it would be a necessary step on theway to accululate Such exotic radionuclides in milligram amout under reasonable cost and radiation safety conditions.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BG - Jaderná, atomová a molekulová fyzika, urychlovače

OECD FORD obor

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Projekt

<a href="/cs/project/KSK2067107" target="_blank" >KSK2067107: Aplikovaná fyzika jako základ technických věd</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2002

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Nuclear Instruments and Methods in Physics Research. Section A-Accelerators Spectrometers Detectors and Associated Equipment

ISSN

0168-9002

e-ISSN

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Svazek periodika

489

Číslo periodika v rámci svazku

1/3

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

21

Strana od-do

448-468

Kód UT WoS článku

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EID výsledku v databázi Scopus

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