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| Research purpose | : | Mechanism of unclear fission is studied from the precise measurements of time flight and kinetic energy of fission Fragments. |
| Specification | : | Diameter of the chamber is 120cm.Equipped withthree revolving tables and one rotation arm for detectors. |
| Persons in charge | : | Hiroyuki MAKII Advanced Science Research Center Research Group for Exotic Heavy Eement Nuclear Science TEL:029-282-5451 |
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| Research purpose | : | Nuclear structure of neutron-rich nuclei has been studied by deep-inelastic scattering with heavy-ions. |
| Specification | : | γ-ray can be detected in high sensitivity by
discriminating isomers with lifetime longer than 1 ns from
projectile-like fragments. [Reference]T.Ishii et al.,Nucl. Instrum and Methods, A395(1997)210. |
| Persons in charge | : | Hiroyuki MAKII Advanced Science Research Center Research Group for Exotic Heavy Eement Nuclear Science TEL:029-282-5451 |
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| Research purpose | : | Equipment for the measurements of recoiling nuclei produced by heavy ion reaction. |
| Specification | : | The equipment consists of QQEMEQQO combination, where Q means
a quadrupole magnet, E a dipole electric field, M a dipole magnetic field
and O a octupole magnetic field. Deflection angle is 25_50_25 degrees. The distance between electrode is 12cm.The pole gap of the magnets is 12cm. Horizontal magnification is 1.66, and vertical one 1.17. Rotation angle, -5~40 °. Totallength, 9.4m. Mass resolution, 300 and mass acceptance, ±4%. Energy acceptance, ±12%. Solid angle, 20msr. For the reduction of background due to scattered ion beams,the positive electrode in the first electric field is separated vertically by the amount of 10mm in the up and down direction from the center to avoid the beam hitting. [Reference] "JAERI recoil mass separator" Nucl. Instr. & Meth. A376(1996)420-427.H. Ikezoe, Y. Nagame, T. Ikuta, S. Hamada, I. Nishinaka and T. Ohtsuki |
| Persons in charge | : | Katsuhisa NISHIO Advanced Science Research Center Research Group for Heavy Element Nuclear Science TEL:029-282-5454 FAX:029-282-5927 |
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| Research purpose | : | Study of nuclear structure,analytical chemistry and materials science by γ ray spectroscopy. |
| Specification | : | Multiple γ-ray yielded from a target are measured with 12 anti-Compton γ-ray spectrometer,each of which comprises a Germanium detecton with high resolution(2.3keV FWHM at 1.33MeV)and high detector efficiency(40-70% efficiency relative to 3 inches φ × 3inches NaI),and a BGO scintillator for suppression of Compton background. |
| Persons in charge | : | Yosuke TOH Nuclear Science and Engineering Directorate Resarch Group for Nuclear Sensing TEL:029-282-6211 FAX:029-282-6789 |
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