Producing long-lived 2(3)S positronium via 3(3)P laser excitation in magnetic and electric fields

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F18%3A00328111" target="_blank" >RIV/68407700:21340/18:00328111 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1103/PhysRevA.98.013402" target="_blank" >http://dx.doi.org/10.1103/PhysRevA.98.013402</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1103/PhysRevA.98.013402" target="_blank" >10.1103/PhysRevA.98.013402</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Producing long-lived 2(3)S positronium via 3(3)P laser excitation in magnetic and electric fields

Popis výsledku v původním jazyce

Producing positronium (Ps) in the metastable 2(3)S state is of interest for various applications in fundamental physics. We report here on an experiment in which Ps atoms are produced in this long-lived state by spontaneous radiative decay of Ps excited to the 3(3)P level manifold. The Ps cloud excitation is obtained with a UV laser pulse in an experimental vacuum chamber in presence of guiding magnetic field of 25 mT and an average electric field of 300 V cm(-1). The evidence of the 2(3)S state production is obtained to the 3.6 sigma level of statistical significance using a novel analysis technique of the single-shot positronium annihilation lifetime spectra. The dynamic of the Ps population on the involved levels has been studied with a rate equation model.

Název v anglickém jazyce

Producing long-lived 2(3)S positronium via 3(3)P laser excitation in magnetic and electric fields

Popis výsledku anglicky

Producing positronium (Ps) in the metastable 2(3)S state is of interest for various applications in fundamental physics. We report here on an experiment in which Ps atoms are produced in this long-lived state by spontaneous radiative decay of Ps excited to the 3(3)P level manifold. The Ps cloud excitation is obtained with a UV laser pulse in an experimental vacuum chamber in presence of guiding magnetic field of 25 mT and an average electric field of 300 V cm(-1). The evidence of the 2(3)S state production is obtained to the 3.6 sigma level of statistical significance using a novel analysis technique of the single-shot positronium annihilation lifetime spectra. The dynamic of the Ps population on the involved levels has been studied with a rate equation model.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10301 - Atomic, molecular and chemical physics (physics of atoms and molecules including collision, interaction with radiation, magnetic resonances, Mössbauer effect)

Projekt

<a href="/cs/project/LTT17018" target="_blank" >LTT17018: Získávání nových poznatků o mikrosvětě v infrastruktuře CERN</a><br>

Návaznosti

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

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název periodika

PHYSICAL REVIEW A

ISSN

2469-9926

e-ISSN

2469-9934

Svazek periodika

98

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

14

Strana od-do

—

Kód UT WoS článku

000436935800010

EID výsledku v databázi Scopus

2-s2.0-85049848523