Startup of superheavy element chemistry at RIKEN

H. Haba; D. Kaji; H. Kikunaga; N. Sato; T. Akiyama; K. Morimoto; A. Yoneda; Kosuke Morita; T. Takabe; Y. Tashiro; Y. Kitamoto; K. Matsuo; D. Saika; K. Ooe; T. Kuribayashi; T. Yoshimura; A. Shinohara; A. Toyoshima

doi:10.1063/1.2713499

Startup of superheavy element chemistry at RIKEN

H. Haba, D. Kaji, H. Kikunaga, N. Sato, T. Akiyama, K. Morimoto, A. Yoneda, Kosuke Morita, T. Takabe, Y. Tashiro, Y. Kitamoto, K. Matsuo, D. Saika, K. Ooe, T. Kuribayashi, T. Yoshimura, A. Shinohara, A. Toyoshima

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

Present status and perspectives of the superheavy element (SHE) chemistry at RIKEN are reviewed. A gas-jet transport system for the SHE chemistry has been installed in the focal plane of the gas-filled recoil ion separator GARIS at the RIKEN Linear Accelerator. The performance of the system was appraised using ²⁰⁶ Fr and ²⁴⁵ Fm produced in the ⁴⁰ Ar-induced reactions on ¹⁶⁹ Tm and ²⁰⁸ Pb, respectively. The α particles of ²⁰⁶ Fr and ²⁴⁵ Fm separated with GARIS and transported by the gas-jet were clearly identified under desired low background condition with a rotating wheel system for α spectrometry. The high gas-jet efficiencies over 90% are independent of the beam intensity up to 2 particle μA. A gas-jet coupled SHE production system and a safety system for the usage of radioactive targets were also developed on the beam line of the RIKEN K70 AVF Cyclotron. The gas-jet transport of ²⁵⁵ No and ²⁶¹ Rf produced in the ²³⁸ U( ²² Ne,5n) ²⁵⁵ No and ²⁴⁸ Cm( ¹⁸ O,5n) ²⁶¹ Rf reactions, respectively, was conducted for the future Sg chemistry by ²⁴⁸ Cm( ²² Ne,5n) ²⁶⁵ Sg.

Original language	English
Title of host publication	TOURS SYMPOSIUM ON NUCLEAR PHYSICS VI
Pages	45-54
Number of pages	10
DOIs	https://doi.org/10.1063/1.2713499
Publication status	Published - Apr 4 2007
Externally published	Yes
Event	TOURS SYMPOSIUM ON NUCLEAR PHYSICS VI - Tours, France Duration: Sept 5 2006 → Sept 8 2006

Publication series

Name	AIP Conference Proceedings
Volume	891
ISSN (Print)	0094-243X
ISSN (Electronic)	1551-7616

Other

Other	TOURS SYMPOSIUM ON NUCLEAR PHYSICS VI
Country/Territory	France
City	Tours
Period	9/5/06 → 9/8/06

All Science Journal Classification (ASJC) codes

Physics and Astronomy(all)

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10.1063/1.2713499

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Haba, H., Kaji, D., Kikunaga, H., Sato, N., Akiyama, T., Morimoto, K., Yoneda, A., Morita, K., Takabe, T., Tashiro, Y., Kitamoto, Y., Matsuo, K., Saika, D., Ooe, K., Kuribayashi, T., Yoshimura, T., Shinohara, A., & Toyoshima, A. (2007). Startup of superheavy element chemistry at RIKEN. In TOURS SYMPOSIUM ON NUCLEAR PHYSICS VI (pp. 45-54). (AIP Conference Proceedings; Vol. 891). https://doi.org/10.1063/1.2713499

Haba, H, Kaji, D, Kikunaga, H, Sato, N, Akiyama, T, Morimoto, K, Yoneda, A, Morita, K, Takabe, T, Tashiro, Y, Kitamoto, Y, Matsuo, K, Saika, D, Ooe, K, Kuribayashi, T, Yoshimura, T, Shinohara, A & Toyoshima, A 2007, Startup of superheavy element chemistry at RIKEN. in TOURS SYMPOSIUM ON NUCLEAR PHYSICS VI. AIP Conference Proceedings, vol. 891, pp. 45-54, TOURS SYMPOSIUM ON NUCLEAR PHYSICS VI, Tours, France, 9/5/06. https://doi.org/10.1063/1.2713499

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title = "Startup of superheavy element chemistry at RIKEN",

abstract = " Present status and perspectives of the superheavy element (SHE) chemistry at RIKEN are reviewed. A gas-jet transport system for the SHE chemistry has been installed in the focal plane of the gas-filled recoil ion separator GARIS at the RIKEN Linear Accelerator. The performance of the system was appraised using 206 Fr and 245 Fm produced in the 40 Ar-induced reactions on 169 Tm and 208 Pb, respectively. The α particles of 206 Fr and 245 Fm separated with GARIS and transported by the gas-jet were clearly identified under desired low background condition with a rotating wheel system for α spectrometry. The high gas-jet efficiencies over 90% are independent of the beam intensity up to 2 particle μA. A gas-jet coupled SHE production system and a safety system for the usage of radioactive targets were also developed on the beam line of the RIKEN K70 AVF Cyclotron. The gas-jet transport of 255 No and 261 Rf produced in the 238 U( 22 Ne,5n) 255 No and 248 Cm( 18 O,5n) 261 Rf reactions, respectively, was conducted for the future Sg chemistry by 248 Cm( 22 Ne,5n) 265 Sg.",

author = "H. Haba and D. Kaji and H. Kikunaga and N. Sato and T. Akiyama and K. Morimoto and A. Yoneda and Kosuke Morita and T. Takabe and Y. Tashiro and Y. Kitamoto and K. Matsuo and D. Saika and K. Ooe and T. Kuribayashi and T. Yoshimura and A. Shinohara and A. Toyoshima",

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doi = "10.1063/1.2713499",

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T1 - Startup of superheavy element chemistry at RIKEN

AU - Haba, H.

AU - Kaji, D.

AU - Kikunaga, H.

AU - Sato, N.

AU - Akiyama, T.

AU - Morimoto, K.

AU - Yoneda, A.

AU - Morita, Kosuke

AU - Takabe, T.

AU - Tashiro, Y.

AU - Kitamoto, Y.

AU - Matsuo, K.

AU - Saika, D.

AU - Ooe, K.

AU - Kuribayashi, T.

AU - Yoshimura, T.

AU - Shinohara, A.

AU - Toyoshima, A.

PY - 2007/4/4

Y1 - 2007/4/4

N2 - Present status and perspectives of the superheavy element (SHE) chemistry at RIKEN are reviewed. A gas-jet transport system for the SHE chemistry has been installed in the focal plane of the gas-filled recoil ion separator GARIS at the RIKEN Linear Accelerator. The performance of the system was appraised using 206 Fr and 245 Fm produced in the 40 Ar-induced reactions on 169 Tm and 208 Pb, respectively. The α particles of 206 Fr and 245 Fm separated with GARIS and transported by the gas-jet were clearly identified under desired low background condition with a rotating wheel system for α spectrometry. The high gas-jet efficiencies over 90% are independent of the beam intensity up to 2 particle μA. A gas-jet coupled SHE production system and a safety system for the usage of radioactive targets were also developed on the beam line of the RIKEN K70 AVF Cyclotron. The gas-jet transport of 255 No and 261 Rf produced in the 238 U( 22 Ne,5n) 255 No and 248 Cm( 18 O,5n) 261 Rf reactions, respectively, was conducted for the future Sg chemistry by 248 Cm( 22 Ne,5n) 265 Sg.

AB - Present status and perspectives of the superheavy element (SHE) chemistry at RIKEN are reviewed. A gas-jet transport system for the SHE chemistry has been installed in the focal plane of the gas-filled recoil ion separator GARIS at the RIKEN Linear Accelerator. The performance of the system was appraised using 206 Fr and 245 Fm produced in the 40 Ar-induced reactions on 169 Tm and 208 Pb, respectively. The α particles of 206 Fr and 245 Fm separated with GARIS and transported by the gas-jet were clearly identified under desired low background condition with a rotating wheel system for α spectrometry. The high gas-jet efficiencies over 90% are independent of the beam intensity up to 2 particle μA. A gas-jet coupled SHE production system and a safety system for the usage of radioactive targets were also developed on the beam line of the RIKEN K70 AVF Cyclotron. The gas-jet transport of 255 No and 261 Rf produced in the 238 U( 22 Ne,5n) 255 No and 248 Cm( 18 O,5n) 261 Rf reactions, respectively, was conducted for the future Sg chemistry by 248 Cm( 22 Ne,5n) 265 Sg.

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ER -

Startup of superheavy element chemistry at RIKEN

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