First high-statistics and high-resolution recoil-ion data from the WITCH retardation spectrometer

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F16%3A00471144" target="_blank" >RIV/61389005:_____/16:00471144 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1140/epja/i2016-16206-y" target="_blank" >http://dx.doi.org/10.1140/epja/i2016-16206-y</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1140/epja/i2016-16206-y" target="_blank" >10.1140/epja/i2016-16206-y</a>

Jazyk výsledku

angličtina

Název v původním jazyce

First high-statistics and high-resolution recoil-ion data from the WITCH retardation spectrometer

Popis výsledku v původním jazyce

The first high-statistics and high-resolution data set for the integrated recoil-ion energy spectrum following the beta(+) decay of Ar-35 has been collected with the WITCH retardation spectrometer located at CERN-ISOLDE. Over 25 million recoil-ion events were recorded on a large-area multichannel plate (MCP) detector with a time-stamp precision of 2 ns and position resolution of 0.1 mm due to the newly upgraded data acquisition based on the LPC Caen FASTER protocol. The number of recoil ions was measured for more than 15 different settings of the retardation potential, complemented by dedicated background and half-life measurements. Previously unidentified systematic effects, including an energy-dependent efficiency of the main MCP and a radiation-induced time-dependent background, have been identified and incorporated into the analysis. However, further understanding and treatment of the radiation-induced background requires additional dedicated measurements and remains the current limiting factor in extracting a beta-neutrino angular correlation coefficient for Ar-35 decay using the WITCH spectrometer.

Název v anglickém jazyce

First high-statistics and high-resolution recoil-ion data from the WITCH retardation spectrometer

Popis výsledku anglicky

The first high-statistics and high-resolution data set for the integrated recoil-ion energy spectrum following the beta(+) decay of Ar-35 has been collected with the WITCH retardation spectrometer located at CERN-ISOLDE. Over 25 million recoil-ion events were recorded on a large-area multichannel plate (MCP) detector with a time-stamp precision of 2 ns and position resolution of 0.1 mm due to the newly upgraded data acquisition based on the LPC Caen FASTER protocol. The number of recoil ions was measured for more than 15 different settings of the retardation potential, complemented by dedicated background and half-life measurements. Previously unidentified systematic effects, including an energy-dependent efficiency of the main MCP and a radiation-induced time-dependent background, have been identified and incorporated into the analysis. However, further understanding and treatment of the radiation-induced background requires additional dedicated measurements and remains the current limiting factor in extracting a beta-neutrino angular correlation coefficient for Ar-35 decay using the WITCH spectrometer.

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

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2016

Kód důvěrnosti údajů

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

Název periodika

European Physical Journal A

ISSN

1434-6001

e-ISSN

—

Svazek periodika

52

Číslo periodika v rámci svazku

7

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

16

Strana od-do

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Kód UT WoS článku

000391616700001

EID výsledku v databázi Scopus

2-s2.0-84980016023