Analysis of thermal radiation in ion traps for optical frequency standards

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00177016%3A_____%2F15%3A%230001219" target="_blank" >RIV/00177016:_____/15:#0001219 - 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

Analysis of thermal radiation in ion traps for optical frequency standards

Popis výsledku v původním jazyce

In many of the high-precision optical frequency standards with trapped atoms or ions that are under development to date, the ac Stark shift induced by thermal radiation leads to a major contribution to the systematic uncertainty. We present an analysis of the inhomogeneous thermal environment experienced by ions in various types of ion traps. Finite element models which allow the determination of the temperature of the trap structure and the temperature of the radiation were developed for five ion trapdesigns, including operational traps at PTB and NPL and further optimized designs. Models were refined based on comparison with infrared camera measurement until an agreement of better than 10% of the measured temperature rise at critical test points wasreached. The effective temperature rises of the radiation seen by the ion range from 0.8?K to 2.1?K at standard working conditions. The corresponding fractional frequency shift uncertainties resulting from the uncertainty in temperature

Název v anglickém jazyce

Analysis of thermal radiation in ion traps for optical frequency standards

Popis výsledku anglicky

In many of the high-precision optical frequency standards with trapped atoms or ions that are under development to date, the ac Stark shift induced by thermal radiation leads to a major contribution to the systematic uncertainty. We present an analysis of the inhomogeneous thermal environment experienced by ions in various types of ion traps. Finite element models which allow the determination of the temperature of the trap structure and the temperature of the radiation were developed for five ion trapdesigns, including operational traps at PTB and NPL and further optimized designs. Models were refined based on comparison with infrared camera measurement until an agreement of better than 10% of the measured temperature rise at critical test points wasreached. The effective temperature rises of the radiation seen by the ion range from 0.8?K to 2.1?K at standard working conditions. The corresponding fractional frequency shift uncertainties resulting from the uncertainty in temperature

Druh

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

CEP obor

BH - Optika, masery a lasery

OECD FORD obor

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Projekt

<a href="/cs/project/7AX13011" target="_blank" >7AX13011: High-accuracy optical clocks with trapped ions</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2015

Kód důvěrnosti údajů

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

Název periodika

Metrologia

ISSN

0026-1394

e-ISSN

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Svazek periodika

52

Číslo periodika v rámci svazku

6

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

15

Strana od-do

842-856

Kód UT WoS článku

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EID výsledku v databázi Scopus

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