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Habilitation Thesis
DOI
10.11606/T.54.2012.tde-13042012-103128
Document
Author
Full name
Vanderlei Salvador Bagnato
Institute/School/College
Knowledge Area
Date of Defense
Published
São Carlos, 1990
Committee
Castellano, Eduardo Ernesto (President)
Costa, Rogerio Cantarino Trajano da
Davidovich, Luiz
Melo, Celso Pinto de
Zimmerman, Robert Lee
Title in Portuguese
Estudos do processo de desaceleração de átomos pela técnica do ajuste Zeeman
Keywords in Portuguese
Ajuste Zeeman
Desaceleração de átomos
Abstract in Portuguese
Neste trabalho apresentamos um estudo detalhado da técnica de desaceleração de átomos pelo ajuste Zeeman. Inicialmente propomos uma nova técnica de observação que consiste no acompanhamento da fluorescência do feixe ao longo do caminho de desaceleração. Nesta técnica o acúmulo de átomos bem como sua ressonância em cada ponto revela aspectos da desaceleração. Usando estas técnicas realizamos estudos sobre efeitos de bombeamento 6ptico e seguimento adiabático de átomos no campo. Através do entendimento destes efeitos pudemos propor modificações que permitiram a produção de um fluxo intenso de átomos lentos.
Title in English
Studies of the Zeeman tuning technique to decelerate
Keywords in English
Atoms deceleration
Zeeman tuning
Abstract in English
We have studied in detail the Zeeman-tuned technique to slow an atomic beam of sodium atoms. A new technique to study the deceleration which consists in monitoring the fluorescence along the deceleration path is used. This allow us a direct observation of the process and open possibilities to investigate the adiabatic following of atoms in the magnetic field, and others very important aspects of the process. With a single laser and some modification of the magnetic field profile we are able to stop atoms outside the slower solenoid, which make a lot of experiments much simpler. A systematic study of the optical pumping effects and adiabatic following conditions allowed us to produce a very strong slow motion atomic beam.
 
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Publishing Date
2012-04-13
 
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