BL17SU Photon-ion merged-beam apparatus
問い合わせ番号
INS-0000000324
A1 station
- Photon-ion merged-beam apparatus (A1a station)
Photon-ion merged-beam apparatus is designed to study the photo absorption and subsequent relaxation processes on the multiply charged ions (MCI) to clarify their characteristics and electronic structure along isonuclear-, isoelectronic-, and isoionic-sequences. The apparatus consists of an MCI source, a charge-selecting magnet, an interaction region and a charge analyzer for product ions. [1,2] A compact electron cyclotron resonance ion source (ECRIS), composed of FeNdB permanent magnets, is employed as the MCI source and operated with 10 kV extraction voltage. The charge-selecting magnet is a double-focus 90°-sector magnet and covers a mass-to-charge ratio up to 70. The MCI-beams of various gaseous and metallic elements can be produced as the targets for photoabsorption studies. We can measure the two dimensional profiles of photon and ion beams at three points along beam direction in the interaction region. Thus the apparatus enables us to measure the absolute photoionization cross sections in the soft X-ray region through photoion yield spectroscopy.
Schematic drawing of the photon-ion merged-beam apparatus
Conceptual drawing of the photon-ion merged-beam apparatus
- SR : synchrotron radiation
- MCP : micro channel plates
- RAE : resistive anode encoder
- A1b station (Free station, user can connect their own instruments)
