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Identifier

000358601

Title

New methods for the production of polarized atoms : hydrogen and chlorine

Alternative Title

Νέοι μέθοδοι παραγωγής και ανίχνευσης πολωμένων ατόμων

Author

Σοφικίτης, Δημήτριος

Thesis advisor

Ρακιτζής, Πέτρος

Abstract

Control over spin and, more generally, over quantum angular momentum has led to many technological advances, such as NMR and medical imaging, and has allowed the study of many spin-dependent phenomena, in the fields of nuclear, atomic, molecular and surface scattering. Almost in all cases, the objective is to create simple distributions of angular momentum since it is in those cases where angular momentum properties can become macroscopically apparent and of technologic and scientific importance. There exist several techniques for the polarization of atomic and molecular systems, as well as for its detection. This work originates in the study of a recently developed technique for the production of spin polarized halogen atoms as well as hydrogen atoms from molecular photodissociation of hydrogen halides. The first part is dedicated in the development of a new technique for the detection of spin polarization in hydrogen atoms using Laser Induced Fluorescence (LIF). As the technique of molecular photodissociation suffers from a depolarization phenomenon that minimizes the amount of the final, time averaged atomic polarization achieved, the effort to minimize this effect results in a new technique for the production of polarized atoms via the hyperfine interaction. This new technique can be considered complementary to the one of molecular photodissociation or completely independent.

Language

English

Subject

Lasers

Photons

Άτομα

Λέιζερ

Φωτόνια

Issue date

2010-07-14

Collection

School/Department--School of Sciences and Engineering--Department of Physics--Doctoral theses