National Institute of Advanced Industrial Science and Technology

Japan Atomic Energy Research Institute

Masataka Ohkubo

Masaki Katagiri

Kouji Suzuki

Detected ion charge states are discriminated in a mass spectrograph using a superconducting stripline detector (SSLD) as the detector thereof. A set of mass spectra of the singly charged or higher ions, the doubly charged or higher ions, the triply charged or higher ions (and successively higher ion charge states) are determined by measuring the mass spectra successively while decreasing the bias current flowing through the superconducting stripline detector. Then, the data of singly charged ions alone can be determined by subtracting the data of the doubly charged or higher ions from the data of the singly charged or higher ions. In a similar manner, the data of doubly charged ions alone, the data of triply charged ions alone (and similarly successively multiply charged ions) can also be determined.

High-speed particle detector for discriminating charge states of ions

In the improved neutron image detector, MgBenriched in a constituent elementB of wide energy gap is used as a neutron detection plate, which is provided at the center and the four corners with a phonon sensor comprising an insulation layer overlaid with MgBenriched inB of narrow energy gap in order to detect phonons resulting from the generation of &#x3b1;-rays which occurs in the detection plate upon incidence of neutrons, and sensor's signal intensity and signal propagation time are used to detect the incident position of neutrons.

Growing community of inventors

Ibaraki, Japan

Masataka Ohkubo