The MUSES project at the RIKEN RI beam factory

Katayama, Takeshi; Batygin, Yuri; Inabe, N.; Ohtomo, K.; Ohkawa, T.; Takanaka, M.; Wakasugi, M.; Watanabe, Shin; Yano, Y.; Yoshida, Kiyota; Xia, J.W.; Rao, Ying; Yuan, Ying

doi:10.1016/s0375-9474(97)00579-4

Cited by 18 publications

(5 citation statements)

References 3 publications

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“…* MUSES/RIBF RIKEN (pending since 2004) (Katayama et al, 1997), * RI-Ring/RIBF-RIKEN (technical design for an isochronous ring (Motobayashi, 2003)), and the * CR-RESR-NESR complex for FAIR/GSI Darmstadt ((FAIR, 2001) technical design), which will be described briefly in Section 8.…”

Section: Recent Projects Relevant For the Experiments With Cooled Exomentioning

confidence: 99%

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Mass and lifetime measurements of exotic nuclei in storage rings

Franzke

Geißel

Münzenberg

2008

Mass Spectrometry Reviews

222

189

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Mass and lifetime measurements lead to the discovery and understanding of basic properties of matter. The isotopic nature of the chemical elements, nuclear binding, and the location and strength of nuclear shells are the most outstanding examples leading to the development of the first nuclear models. More recent are the discoveries of new structures of nuclides far from the valley of stability. A new generation of direct mass measurements which allows the exploration of extended areas of the nuclear mass surface with high accuracy has been opened up with the combination of the Experimental Storage Ring ESR and the FRragment Separator FRS at GSI Darmstadt. In-flight separated nuclei are stored in the ring. Their masses are directly determined from the revolution frequency. Dependent on the half-life two complementary methods are applied. Schottky Mass Spectrometry SMS relies on the measurement of the revolution frequency of electron cooled stored ions. The cooling time determines the lower half-life limit to the order of seconds. For Isochronous Mass Spectrometry IMS the ring is operated in an isochronous ion-optical mode. The revolution frequency of the individual ions coasting in the ring is measured using a time-of-flight method. Nuclides with lifetimes down to microseconds become accessible. With SMS masses of several hundreds nuclides have been measured simultaneously with an accuracy in the 2 x 10(-7)-range. This high accuracy and the ability to study large areas of the mass surface are ideal tools to discover new nuclear structure properties and to guide improvements for theoretical mass models. In addition, nuclear half-lives of stored bare and highly charged ions have been measured. This new experimental development is a significant progress since nuclear decay characteristics are mostly known for neutral atoms. For bare and highly charged ions new nuclear decay modes become possible, such as bound-state beta decay. Dramatic changes in the nuclear lifetime have been observed in highly charged ions compared to neutral atoms due to blocking of nuclear decay channels caused by the modified atomic interaction. High ionization degrees prevail in hot stellar matter and thus these experiments have great relevance for the understanding of the synthesis of elements in the universe and astrophysical scenarios in general.

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Section: Recent Projects Relevant For the Experiments With Cooled Exomentioning

confidence: 99%

“…AT IMP Lanzhou, China, a storage-ring with electron cooling is being commissioned soon (Lanzhou, 2007). The MUSES storage-ring project at RIKEN is pending (Katayama et al, 1997).…”

Section: Futurementioning

confidence: 99%

Mass and lifetime measurements of exotic nuclei in storage rings

Franzke

Geißel

Münzenberg

2008

Mass Spectrometry Reviews

222

189

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“…Beams from this facility (e.g. 2.6 × 10 11 238 U 49+ ions with normalized emittance after cooling of 10 mm mrad) should produce plasma temperatures of 10-50 eV [15].…”

Section: Powerful Accelerator Facilitiesmentioning

confidence: 99%

Status of heavy ion fusion

Sharkov¹

2001

Plasma Phys. Control. Fusion

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An overview of ongoing activities on heavy ion fusion (HIF) in Russia, Europe, the USA and Japan is presented. In this phase, the activities are oriented towards theoretical and experimental investigations of the state of matter under extreme conditions, experimental and theoretical study on heavy ion beam-plasma interaction, powerful driver issues and development of computer codes for comprehensive numerical simulations of heavy ion driven inertial fusion. In the context of the new-generation facilities at GSI-Darmstadt and ITEP-Moscow, considerations are focused on large synchrotron rings and high current accumulator rings which would be important tools for investigations in the physics of dense plasmas and inertial fusion. Numerous national and international collaborations on HIF research are proceeding effectively towards development of a new energy source that is abundant, safe, environmentally acceptable and economical.

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“…In this project, the superconducting ring cyclotron with K number of 2500 will be constructed within 4 years, and the MUSES, Multi-USe Experimental Storage rings, is scheduled to start the construction just after the completion of cyclotron system. In the present paper, the outline of MUSES project is presented, while the details are given elsewhere [1,2] and in this conference.…”

mentioning

confidence: 99%

MUSES project at RIKEN RI beam factory

Katayama

Maruyama

Wakasugi

2000

Hadron and Nuclear Physics With Electromagnetic Probes

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At RIKEN, the construction of Radio Isotope Beam factory, RIBF has been strated from the fiscal year 1998. In this project, the superconducting ring cyclotron with K number of 2500 will be constructed within 4 years, and the MUSES, Multi-USe Experimental Storage rings, is scheduled to start the construction just after the completion of cyclotron system. In the present paper, the outline of MUSES project is presented, while the details are given elsewhere [1,2] and in this conference.

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The MUSES project at the RIKEN RI beam factory

Cited by 18 publications

References 3 publications

Mass and lifetime measurements of exotic nuclei in storage rings

Mass and lifetime measurements of exotic nuclei in storage rings

Status of heavy ion fusion

MUSES project at RIKEN RI beam factory

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