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The laser and optical system for the RIBF-PALIS experiment.

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Title: The laser and optical system for the RIBF-PALIS experiment.
Authors: Sonoda, T.1 tetsu@riken.jp, Iimura, H.1,2, Reponen, M.3, Wada, M.1,4, Katayama, I.1, Sonnenschein, V.1,5, Takamatsu, T.1,5, Tomita, H.1,5, Kojima, T.M.1
Source: Nuclear Instruments & Methods in Physics Research Section A. Jan2018, Vol. 877, p118-123. 6p.
Subjects: Laser spectroscopy, Radioisotopes, Light sources, Gas vans (Gas chambers), Resonance ionization spectroscopy, Laser beams
Abstract: This paper describes the laser and optical system for the Parasitic radioactive isotope (RI) beam production by Laser Ion-Source (PALIS) in the RIKEN fragment separator facility. This system requires an optical path length of 70 m for transporting the laser beam from the laser light source to the place for resonance ionization. To accomplish this, we designed and implemented a simple optical system consisting of several mirrors equipped with compact stepping motor actuators, lenses, beam spot screens and network cameras. The system enables multi-step laser resonance ionization in the gas cell and gas jet via overlap with a diameter of a few millimeters, between the laser photons and atomic beam. Despite such a long transport distance, we achieved a transport efficiency for the UV laser beam of about 50%. We also confirmed that the position stability of the laser beam stays within a permissible range for dedicated resonance ionization experiments. [ABSTRACT FROM AUTHOR]
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Database: Engineering Source
Description
Abstract:This paper describes the laser and optical system for the Parasitic radioactive isotope (RI) beam production by Laser Ion-Source (PALIS) in the RIKEN fragment separator facility. This system requires an optical path length of 70 m for transporting the laser beam from the laser light source to the place for resonance ionization. To accomplish this, we designed and implemented a simple optical system consisting of several mirrors equipped with compact stepping motor actuators, lenses, beam spot screens and network cameras. The system enables multi-step laser resonance ionization in the gas cell and gas jet via overlap with a diameter of a few millimeters, between the laser photons and atomic beam. Despite such a long transport distance, we achieved a transport efficiency for the UV laser beam of about 50%. We also confirmed that the position stability of the laser beam stays within a permissible range for dedicated resonance ionization experiments. [ABSTRACT FROM AUTHOR]
ISSN:01689002
DOI:10.1016/j.nima.2017.09.055