Determination of Separation Efficiency of the Mass-Spectrometer MASHA by Means of Measurement of Absolute Cross-Sections of Evaporation Residues

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F19%3A73604147" target="_blank" >RIV/61989592:15310/19:73604147 - isvavai.cz</a>

Výsledek na webu

<a href="https://obd.upol.cz/id_publ/333184033" target="_blank" >https://obd.upol.cz/id_publ/333184033</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1142/9789811209451_0054" target="_blank" >10.1142/9789811209451_0054</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Determination of Separation Efficiency of the Mass-Spectrometer MASHA by Means of Measurement of Absolute Cross-Sections of Evaporation Residues

Popis výsledku v původním jazyce

The separation efficiencies of the mass-spectrometer MASHA were determined for short-lived mercury isotopes produced in xn-evaporation channels of complete fusion reaction 40Ar+144Sm → 184Hg. For the determination of the efficiencies two independent techniques were used: the modified catcher foil technique [1] for the measurement of the absolute cross-sections and the solid state ISOL technique using the mass-spectrometer MASHA [2]. The absolute cross-sections of evaporation residua in the reactions 40Ar+144Sm → 184Hg and 48Ca+142Nd → 190Hg were obtained with use of moving absorber array. The beam interruption method was applied. During the accumulation time (beam is on) five thin aluminum foils of absorber array were placed one under another so the reaction products were stopped there. After that the absorber array was moved and extended to its full length so that each absorber foil was placed opposite to the corresponding silicon detector during the measurement time (beam is off). Then the α-decays of synthesized isotopes were detected and the energy and the exact time of α-particle registration were recorded. As a result, the method allowed reliable identification of reaction products from their α-decay energies and decay times.

Název v anglickém jazyce

Determination of Separation Efficiency of the Mass-Spectrometer MASHA by Means of Measurement of Absolute Cross-Sections of Evaporation Residues

Popis výsledku anglicky

The separation efficiencies of the mass-spectrometer MASHA were determined for short-lived mercury isotopes produced in xn-evaporation channels of complete fusion reaction 40Ar+144Sm → 184Hg. For the determination of the efficiencies two independent techniques were used: the modified catcher foil technique [1] for the measurement of the absolute cross-sections and the solid state ISOL technique using the mass-spectrometer MASHA [2]. The absolute cross-sections of evaporation residua in the reactions 40Ar+144Sm → 184Hg and 48Ca+142Nd → 190Hg were obtained with use of moving absorber array. The beam interruption method was applied. During the accumulation time (beam is on) five thin aluminum foils of absorber array were placed one under another so the reaction products were stopped there. After that the absorber array was moved and extended to its full length so that each absorber foil was placed opposite to the corresponding silicon detector during the measurement time (beam is off). Then the α-decays of synthesized isotopes were detected and the energy and the exact time of α-particle registration were recorded. As a result, the method allowed reliable identification of reaction products from their α-decay energies and decay times.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

10304 - Nuclear physics

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2019

Kód důvěrnosti údajů

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

Název statě ve sborníku

Exotic Nuclei EXON-2018 Proceedings of the International Symposium on Exotic Nuclei

ISBN

978-981-12-0944-4

ISSN

—

e-ISSN

—

Počet stran výsledku

5

Strana od-do

386-390

Název nakladatele

World Scientific Publishing Company

Místo vydání

Singapore

Místo konání akce

Petrozavodsk

Datum konání akce

10. 9. 2018

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

—