Influence of the Magnetic Field Gradient on the Extraction of Slow Sodium Atoms outside the Solenoid in the Zeeman Slower.

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  • Kondo Yoshiteru
    Department of Physics, Faculty of Science and Technology, Science University of Tokyo, 2641, Yamazaki, Noda, Chiba 278, Japan
  • Saito Mitsuyo
    Department of Physics, Faculty of Science and Technology, Science University of Tokyo, 2641, Yamazaki, Noda, Chiba 278, Japan
  • Yamashita Masafumi
    Department of Physics, Faculty of Science and Technology, Science University of Tokyo, 2641, Yamazaki, Noda, Chiba 278, Japan
  • Tako Toshiharu
    Department of Physics, Faculty of Science and Technology, Science University of Tokyo, 2641, Yamazaki, Noda, Chiba 278, Japan
  • Morinaga Atsuo
    Department of Physics, Faculty of Science and Technology, Science University of Tokyo, 2641, Yamazaki, Noda, Chiba 278, Japan

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  • Influence of the Magnetic Field Gradien

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Abstract

In order to produce an intense steady flux of slow sodium atoms outside the solenoid in a Zeeman slower, the relation between the extraction velocity of the atoms and the magnetic field gradient at the exit of the Zeeman solenoid was examined. When the magnetic field gradient was 0.5 T/m, slow atoms with a velocity of 160 m/s were extracted outside the solenoid with a slowing laser detuning of 250 MHz. On the other hand, when the magnetic field gradient was higher, i.e., 1.4 T/m, slow atoms with a velocity of 30 m/s were extracted with a slowing laser detuning of 550 MHz. The magnetic-field adiabatic following condition is discussed by comparing the experimental results with those of a Monte Carlo simulation.

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