Center for Nuclear Study

The University of Tokyo



Opening of Assistant Research Staff

CNS has several devices in RIBF in RIKEN Nishina Center and pursues the experimental nuclear physics such as nuclear astrophysics and nuclear structure/reaction studies with radioactive isotope beams. We also have branches of fundamental physics with radioactive heavy elements, high-energy nuclear physics, nuclear theory and development of ion sources.

Center for Nuclear Study, University of Tokyo

Opening of Assistant Research Staff

  1. Title and Hiring Numbers: Assistant Research Staff, a few positions available

  2. Term of Employment: April 1st, 2021 ~ March 31st, 2022

  3. Renewal of Contract:One-year fixed-term employment contract, renewable up to March 31st, 2024 (maximum 3 years) according to research budget, research activity, and research achievements.

  4. Probation Period: 14 days from the date employment commences

  5. Place of Work: Center for Nuclear Study, the Graduate School of Science, The University of Tokyo (CNS in RIKEN, Hirosawa2-1, Wako-shi, Saitama)

  6. Affiliation: Center for Nuclear Study, Graduate School of Science, The University of Tokyo

  7. Contents of Work Duties: Experimental and theoretical nuclear physics. The successful candidates will work on experimental nuclear physics with radioactive isotopes mainly by using the devices of CNS (CRIB, SHARAQ, Ge array (GRAPE), OEDO, Active Target, etc), on fundamental physics with radioactive heavy elements, on high energy nuclear collisions at ALICE at LHC, or on nuclear structure theory.

  8. Working Day/Hours: Working hours and days are deemed to be 6 hours (10:00-16:45, 12:00-12:45 rest) and five days (Mon – Fri) per week, respectively.

  9. Days off, Leave: Saturdays, Sundays, national holidays and end-of-year and new-year holidays (December 29 to January 3), Annual leave, Special Leave, etc

  10. Wages, etc: 1,970 yen/hour, Commuter allowance: JPY55,000 per month at maximum
    Overtime allowance: Dependent on hours of each month

  11. Insurance: The successful candidate will be automatically enrolled in the health insurance and pension schemes provided by the Mutual Aid Association of MEXT (Ministry of Education, Culture, Sports, Science and Technology) and will be provided with employment insurance.

  12. Qualification Requirements: The candidates have experience in experimental and theoretical heavy-ion physics researches and must be cooperative in education and researches in CNS.

  13. Documents to be Submitted: All documents should be submitted online in the pdf format
    1)curriculum vitae (with a picture). Please download and use the CV format below. 2)List of Publication/Talks/etc.
    3)Research summary and future plan at CNS
    4)Names and contact details of reference

  14. Submission Method: The above materials have to be uploaded to the file server with the PDF file. We will inform you on the URL of the file server and also the password. Please contact (AT →@) with email before you submit your application materials.

  15. Application Deadline: All documents must be submitted on or before Tuesday, 12th January, 2021. After initial screening with the application form, interviews will be arranged on 27th January. Interviews will take place at Wako or ONLINE depending on the COVID-19 situation and consist of a presentation of the research achievements and plans. For applicants from abroad, the interview will be conducted via ONLINE (Zoom).

  16. Contact: Center for Nuclear Study, Graduate School of Science, the University of Tokyo Director of CNS, Prof. Susumu Shimoura
    Tel: 048-464-4285
    e-mail: → @)

  17. Name of Recruiter: The University of Tokyo

  18. Other: Personal information obtained will only be used for recruitment purposes.

Posted on 18 Dec, 2020


CRIB paper was selected as a Physical Review C 50th Anniversary Milestone

A paper from CRIB facility titled “α-resonance structure in 11C studied via resonant scattering of 7Be+α and with the 7Be(α,p) reaction” was selected as one of the “50th Anniversary Milestones of Physical Review C”. The collection includes 37 papers published in Physical Review C in the last 50 years, and the papers “remain central to developments in the field of nuclear physics” and “announce major discoveries or open up new avenues of research”.

Selected Paper: Yamaguchi et al., Phys. Rev. C 87, 034303 (2013)

Posted on 18 Nov, 2020


New Publication: Mapping of a New Deformation Region around <sup>62</sup>Ti

A new article “Mapping of a New Deformation Region aound 62Ti” was published in Physical Review Letter (Phys. Rev. Lett. 125, 122501 (2020)).

Press Release: “Mapping the center of atoms - Titanium isotopes reveal unexpected stability of trapped neutrons inside nuclei”

Posted on 16 Sep, 2020


CRIB article in Nuclear Physics News

An article on CRIB facility titled “CRIB: The Low Energy In-Flight RI Beam Separator” was published in the latest issue of Nuclear Physics News.

Posted on 27 Aug, 2020


CNS Seminar 2020/08/07 Dr. S. Koyama

Place: online

Date: Aug. 07 (Fri) 13:30 - 14:30 * The talk will be given in English. *

Speaker: Dr. Shumpei Koyama (CNS)

Title : Spectroscopy of resonance states in light proton-rich nuclei via missing mass method

contact: Ken Yako

Posted on 5 Aug, 2020


CNS Seminar 2020/07/29 Dr. N. Kitamura

Place: online

Date: Jul. 29 (Wed) 13:30 - 14:30 * The talk will be given in English. *

Speaker: Dr. Noritaka Kitamura (CNS)

Title : In-beam spectroscopy of 30Mg: structural evolution approaching the island of inversion

Abstract : In the island of inversion, ground states of neutron-rich nuclei around 32Mg exhibit strong admixtures of fp-shell intruder contributions. The nucleus 30Mg is located at the border of the island of inversion, and its nuclear structure serves as a cornerstone to track the structural evolution as one approaches the heart of the island, namely 32Mg. In the present work, the structure of 30Mg was studied by detailed in-beam gamma-ray spectroscopy, primarily focusing on firm spin-parity assignments for excited states. The experiment was performed at the National Superconducting Cyclotron Laboratory at Michigan State University. States in 30Mg were populated via nucleon removal reactions. Gamma rays were detected using the state-of-the-art gamma-ray tracking array GRETINA in coincidence with the residual 30Mg, allowing for the construction of an updated level scheme. The experimental results were confronted with large-scale shell-model calculations, providing further insight into the transition into the island of inversion. In this talk, the results and their interpretations will be presented. A new in-beam measurement of 32Mg will also be discussed briefly.

contact: Ken Yako

Posted on 29 Jul, 2020


PR: A Paper from SHARAQ

A paper from SHARAQ facility, titled “How Different is the Core of 25F from 24Og.s.?” was published in Physical Review Letter. This paper is based on the dissertation work by Dr. Ryan Tang (Tang, Tsz Leung), a former student at CNS.
Link to the press release article at RIKEN

Posted on 28 May, 2020



CNS + RIBF NP seminar by Prof. Muhsin Harakeh at RIBF Hall from 15:00.

Posted on 3 Feb, 2020



Jan 29-30 External review of CNS at Hongo and Wako.

Posted on 29 Jan, 2020