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Reference : UMR9012-REJBOD-018
Workplace : ORSAY
Date of publication : Thursday, September 10, 2020
Type of Contract : FTC Scientist
Contract Period : 24 months
Expected date of employment : 1 January 2021
Proportion of work : Full time
Remuneration : Between 2728€ and 3145€ gross per month depending on experience.
Desired level of education : PhD
Experience required : Indifferent
The postdoctoral researcher will analyze data taken with the gamma-ray multidetector AGATA during its campaign at GANIL. This position has as primary goal to finalize the extraction of lifetimes from this data set and publish these results in scientific journals. It is expected that at least two high quality publications should be written within the 2 year time period of the postdoctoral contract. However, the postdoc will also be encouraged to propose experiments and participate in the upcoming experiments with AGATA at Legnaro, Italy.
The experiment was aimed at measuring lifetimes in neutron-rich nuclei produced using fusion-fission of the system 8Be+238U. AGATA was used to detect prompt gamma-rays and the VAMOS spectrometer was used to identify, on an event by event basis the produced nucleus. For lifetime measurements, the device also included the OUPS plunger for recoil distance doppler shift measurements as well as the FATIMA fast timing array. A large range of lifetimes can therefore be measured.
- Analyze AGATA+VAMOS data using the appropriate tools (mainly ROOT) to extract gamma-ray spectra
- Extract lifetimes using the above-mentioned gamma-ray spectra.
- Publish and present the expected results at international conferences.
The candidate has to have a PhD in nuclear structure physics. A working knowledge in English is mandatory. He/She is also expected to have knowledge in at least one program used to analyze gamma-ray spectra. Having performed Recoil Distance Doppler Shift measurements is considered a very strong point. The candidate should also be familiar with the ROOT framework.
The Irène Joliot-Curie Physics Laboratory of 2 Infinities (IJCLab) is a laboratory under the supervision of the CNRS (IN2P3), the University of Paris-Saclay and the University of Paris. The laboratory is located on the campus of the Université Paris-Sud, Université Paris-Saclay in Orsay, 20 km south of Paris and easily accessible by RER in 35 minutes.
IJCLab was born in 2020 from the merger of five Mixed Research Units (CSNSM, IMNC, IPN, LAL, LPT). The staff is made up of nearly 560 permanent (340 engineers, technicians and administrators and 220 researchers and teacher-researchers) and approximately 200 non-permanent including 120 doctoral students. The research themes of the laboratory are nuclear physics, high energy physics, theoretical physics, astroparticles, astrophysics and cosmology, particle accelerators, energy and the environment and health. IJCLab has very significant technical capacities (around 280 IT) in all the major fields required to design, develop / implement the experimental devices necessary for its scientific activity, as well as the design, development and use of instruments. .
The postdoc will work in the SDF group of the laboratory, which has a broad nuclear structure research program. Within the group we measure masses, electromagnetic properties of ground states and excited states, study the fission process and super heavy nuclei via decay spectroscopy. The group includes around 10 physicists (permanent researchers, post-docs and doctoral students).
The postdoc will be working in the Structure, Decay, and Fission (SDF) group at the IJCLab under the supervision of Joa Ljungvall, in close collaboration with the nuclear structure group at the LENA laboratory of the Nuclear Physics Department of IRFU CEA Saclay.
Constraints and risks
Short periods of travel inside and outside of France are to be expected. Furthermore, the work will require access to controlled areas within laboratories. This requires the postdoc to be a worker that has the authorization to work in areas with exposure to radiation (max 5 mSv/year).
The candidate must submit a covering letter and CV without any break in date showing diplomas, titles and professional experience. Letters of recommendation (max 2) are to be sent to
They should clearly state the relation to the candidate and include contact details to the author.
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