Mass separation of neutron-rich isotopes using a gas-jet coupled thermal ion source

S. Ichikawa; M. Asai; K. Tsukada; A. Osa; T. Ikuta; N. Shinohara; H. Iimura; Y. Nagame; Y. Hatsukawa; I. Nishinaka; K. Kawade; H. Yamamoto; M. Shibata; Y. Kojima

doi:10.1016/0168-9002(96)00086-1

Mass separation of neutron-rich isotopes using a gas-jet coupled thermal ion source

S. Ichikawa, M. Asai, K. Tsukada, A. Osa, T. Ikuta, N. Shinohara, H. Iimura, Y. Nagame, Y. Hatsukawa, I. Nishinaka, K. Kawade, H. Yamamoto, M. Shibata, Y. Kojima

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Abstract

A gas-jet coupled thermal ion source was installed in the isotope separator on line at the JAERI tandem accelerator. It was used for separation of neutron-rich isotopes produced in the reaction ²³⁸U(15 MeV-p, fission). The separation efficiencies of the whole system were measured to be 3.3% for ¹⁴⁰Cs (T1/2 = 63.7 s), 2.0% for ¹⁴⁴La (T_1/2 = 40.8 s), 2.2% for ¹⁴⁸Pr (T_1/2 = 2.0 m), 1.2% for ¹⁵⁶Pm (T_1/2= 26.7 s) and 1.0% for ¹⁶⁰Eu (T_1/2 = 44 s). A long sticking time of La atoms on the ionizer surface gave a low efficiency of about 0.1% for ¹⁴⁸La (T_1/2 = 1.05 s). The first observation of a new isotope ¹⁶⁶Tb was carried out using its monoxide ions from this ion source: T_1/2(¹⁶⁶Tb) = 21±6 s.

Original language	English
Pages (from-to)	330-334
Number of pages	5
Journal	Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume	374
Issue number	3
DOIs	https://doi.org/10.1016/0168-9002(96)00086-1
Publication status	Published - Jun 1 1996
Externally published	Yes

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics
Instrumentation

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10.1016/0168-9002(96)00086-1

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Ichikawa, S., Asai, M., Tsukada, K., Osa, A., Ikuta, T., Shinohara, N., Iimura, H., Nagame, Y., Hatsukawa, Y., Nishinaka, I., Kawade, K., Yamamoto, H., Shibata, M., & Kojima, Y. (1996). Mass separation of neutron-rich isotopes using a gas-jet coupled thermal ion source. Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 374(3), 330-334. https://doi.org/10.1016/0168-9002(96)00086-1

Mass separation of neutron-rich isotopes using a gas-jet coupled thermal ion source. / Ichikawa, S.; Asai, M.; Tsukada, K. et al.
In: Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 374, No. 3, 01.06.1996, p. 330-334.

Research output: Contribution to journal › Article › peer-review

Ichikawa, S, Asai, M, Tsukada, K, Osa, A, Ikuta, T, Shinohara, N, Iimura, H, Nagame, Y, Hatsukawa, Y, Nishinaka, I, Kawade, K, Yamamoto, H, Shibata, M & Kojima, Y 1996, 'Mass separation of neutron-rich isotopes using a gas-jet coupled thermal ion source', Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, vol. 374, no. 3, pp. 330-334. https://doi.org/10.1016/0168-9002(96)00086-1

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abstract = "A gas-jet coupled thermal ion source was installed in the isotope separator on line at the JAERI tandem accelerator. It was used for separation of neutron-rich isotopes produced in the reaction 238U(15 MeV-p, fission). The separation efficiencies of the whole system were measured to be 3.3% for 140Cs (T1/2 = 63.7 s), 2.0% for 144La (T1/2 = 40.8 s), 2.2% for 148Pr (T1/2 = 2.0 m), 1.2% for 156Pm (T1/2= 26.7 s) and 1.0% for 160Eu (T1/2 = 44 s). A long sticking time of La atoms on the ionizer surface gave a low efficiency of about 0.1% for 148La (T1/2 = 1.05 s). The first observation of a new isotope 166Tb was carried out using its monoxide ions from this ion source: T1/2(166Tb) = 21±6 s.",

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AU - Ikuta, T.

AU - Shinohara, N.

AU - Iimura, H.

AU - Nagame, Y.

AU - Hatsukawa, Y.

AU - Nishinaka, I.

AU - Kawade, K.

AU - Yamamoto, H.

AU - Shibata, M.

AU - Kojima, Y.

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N2 - A gas-jet coupled thermal ion source was installed in the isotope separator on line at the JAERI tandem accelerator. It was used for separation of neutron-rich isotopes produced in the reaction 238U(15 MeV-p, fission). The separation efficiencies of the whole system were measured to be 3.3% for 140Cs (T1/2 = 63.7 s), 2.0% for 144La (T1/2 = 40.8 s), 2.2% for 148Pr (T1/2 = 2.0 m), 1.2% for 156Pm (T1/2= 26.7 s) and 1.0% for 160Eu (T1/2 = 44 s). A long sticking time of La atoms on the ionizer surface gave a low efficiency of about 0.1% for 148La (T1/2 = 1.05 s). The first observation of a new isotope 166Tb was carried out using its monoxide ions from this ion source: T1/2(166Tb) = 21±6 s.

AB - A gas-jet coupled thermal ion source was installed in the isotope separator on line at the JAERI tandem accelerator. It was used for separation of neutron-rich isotopes produced in the reaction 238U(15 MeV-p, fission). The separation efficiencies of the whole system were measured to be 3.3% for 140Cs (T1/2 = 63.7 s), 2.0% for 144La (T1/2 = 40.8 s), 2.2% for 148Pr (T1/2 = 2.0 m), 1.2% for 156Pm (T1/2= 26.7 s) and 1.0% for 160Eu (T1/2 = 44 s). A long sticking time of La atoms on the ionizer surface gave a low efficiency of about 0.1% for 148La (T1/2 = 1.05 s). The first observation of a new isotope 166Tb was carried out using its monoxide ions from this ion source: T1/2(166Tb) = 21±6 s.

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Mass separation of neutron-rich isotopes using a gas-jet coupled thermal ion source

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