Startup of superheavy element chemistry at RIKEN

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

Research Center for Electron Photon Science (ELPH)

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

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 ²⁰⁶Fr and ²⁴⁵Fm produced in the ⁴⁰Ar-induced reactions on ¹⁶⁹Tm and ²⁰⁸Pb, respectively. The α particles of ²⁰⁶Fr and ²⁴⁵Fm 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 ²⁵⁵No and ²⁶¹Rf produced in the ²³⁸U(²²Ne,5n) ²⁵⁵No and ²⁴⁸Cm(¹⁸O,5n)²⁶¹Rf reactions, respectively, was conducted for the future Sg chemistry by ²⁴⁸Cm(²²Ne,5n)²⁶⁵Sg.

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 - 2007
Event	TOURS SYMPOSIUM ON NUCLEAR PHYSICS VI - Tours, France Duration: 2006 Sept 5 → 2006 Sept 8

Publication series

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

Conference

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

Keywords

Fr
Fm
No
Rf
Gas-jet transport system
RIKEN gas-filled recoil ion separator (GARIS)
Superheavy element chemistry

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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

@inproceedings{4754863fcb7a4f4ea0bca854bf18f9d6,

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 206Fr and 245Fm produced in the 40Ar-induced reactions on 169Tm and 208Pb, respectively. The α particles of 206Fr and 245Fm 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 255No and 261Rf produced in the 238U(22Ne,5n) 255No and 248Cm(18O,5n)261Rf reactions, respectively, was conducted for the future Sg chemistry by 248Cm(22Ne,5n)265Sg.",

keywords = "Fr, Fm, No, Rf, Gas-jet transport system, RIKEN gas-filled recoil ion separator (GARIS), Superheavy element chemistry",

author = "H. Haba and D. Kaji and H. Kikunaga and N. Sato and T. Akiyama and K. Morimoto and A. Yoneda and K. 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",

year = "2007",

doi = "10.1063/1.2713499",

language = "English",

isbn = "0735403953",

series = "AIP Conference Proceedings",

pages = "45--54",

booktitle = "TOURS SYMPOSIUM ON NUCLEAR PHYSICS VI",

note = "TOURS SYMPOSIUM ON NUCLEAR PHYSICS VI ; Conference date: 05-09-2006 Through 08-09-2006",

}

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, 06/9/5. https://doi.org/10.1063/1.2713499

TY - GEN

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, K.

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

Y1 - 2007

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 206Fr and 245Fm produced in the 40Ar-induced reactions on 169Tm and 208Pb, respectively. The α particles of 206Fr and 245Fm 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 255No and 261Rf produced in the 238U(22Ne,5n) 255No and 248Cm(18O,5n)261Rf reactions, respectively, was conducted for the future Sg chemistry by 248Cm(22Ne,5n)265Sg.

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 206Fr and 245Fm produced in the 40Ar-induced reactions on 169Tm and 208Pb, respectively. The α particles of 206Fr and 245Fm 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 255No and 261Rf produced in the 238U(22Ne,5n) 255No and 248Cm(18O,5n)261Rf reactions, respectively, was conducted for the future Sg chemistry by 248Cm(22Ne,5n)265Sg.

KW - Fr

KW - Fm

KW - No

KW - Rf

KW - Gas-jet transport system

KW - RIKEN gas-filled recoil ion separator (GARIS)

KW - Superheavy element chemistry

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UR - http://www.scopus.com/inward/citedby.url?scp=33947721564&partnerID=8YFLogxK

U2 - 10.1063/1.2713499

DO - 10.1063/1.2713499

M3 - Conference contribution

AN - SCOPUS:33947721564

SN - 0735403953

SN - 9780735403956

T3 - AIP Conference Proceedings

SP - 45

EP - 54

BT - TOURS SYMPOSIUM ON NUCLEAR PHYSICS VI

T2 - TOURS SYMPOSIUM ON NUCLEAR PHYSICS VI

Y2 - 5 September 2006 through 8 September 2006

ER -

Startup of superheavy element chemistry at RIKEN

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