SAMURAI International Collaboration Workshop 2019

Session

Status report

30 Aug 2019, 10:05

McKim Hall (Building #15), Room MB01 (Rikkyo University)

Conveners

Status report: Status report 1

• There are no conveners in this block

Status report: Status report 2

• Nigel Orr (LPC-Caen)

Status report: Status report 3

• Thomas Aumann (Technische Universitaet Darmstadt)

Status report: Status report 4: DAQ

• Tadaaki Isobe (RIKEN)

Status report: Status report 5

• Masaki Sasano (RIKEN Nishina Center)

Status report: Status report 6

• Yosuke KONDO (Tokyo Institute of Technology)

17. STRASSE: a silicon tracker project for quasi free scattering at RIBF

Yelei Sun (CEA Saclay)

30/08/2019, 10:05

16. Development of high-granularity neutron detector array HIME

Takashi Nakamura (Tokyo Institute of Technology)

30/08/2019, 10:25

18. Status of TUDa funding application for construction of HIME and future experiments at SAMURAI

Thomas Aumann (Technische Universitaet Darmstadt)

30/08/2019, 10:45

3. Invariant-Mass Spectroscopy at the low-Z Shore of the Island of Inversion

Dr Dominic Rossi (TU Darmstadt)

30/08/2019, 13:30

The so-called “island of inversion” is a region in the nuclear landscape where shell-structure changes are observed and in particular the magic neutron number at N=20 vanishes. For those nuclei at Z=10−12 and around N=20, the shell gap at N=20 quenches and pf-shell intruder configurations become important. We address the question how strong such configurations are for very neutron-rich but Z=9...

4. Study of unbound nuclei $^{33}$Ne via one-proton knockout reactions

Mr Hyunwoo Chae (Seoul National University)

30/08/2019, 13:50

The magicity of N=20 in the vicinity of Ne, Na, and Mg isotopes vanishes due to pf-shell intruder configuration, which is called 'island of inversion' [1-3]. In recent years, shell evolution of Ne isotopes in this region is emerging topic of interest [4,5]. Nevertheless, there is no observed state of $^{33}$Ne.
It is only known that $^{33}$Ne is unbound nuclei [6] and the 1n separation...

6. Analysis Update on the Lifetime Measurement of the $^\text{26}$O g.s. at SAMURAI

Ms Sonja Storck (TU Darmstadt)

30/08/2019, 14:10

A recent experiment suggests that the ground state of the neutron-unbound nucleus $^\text{26}$O could have a lifetime in the pico-second regime. This would constitute the first case of a radioactive
decay via neutron emission, if this value can be confirmed.

In Dezember 2016, the S20 experiment using a new measurement method to determine the decay lifetime
of the $^\text{26}$O ground state...

21. Measurement of isotopic production cross sections of the proton- and deuteron-induced spallation reactions on 93Zr at 209 MeV/u

Dr Shoichiro Kawase (Kyusyu University)

30/08/2019, 14:30

22. TBA (Fission)

Masaki Sasano (RIKEN Nishina Center)

30/08/2019, 14:50

23. TBA (RIKEN status)

Ken-ichiro YONEDA (RIKEN Nishina Center)

30/08/2019, 15:30

9. Analysis of 8He(p, p alpha)4n

Dr Meytal Duer (TU Darmstadt)

30/08/2019, 15:50

Details will be given on the current status of the analysis of the 8He(p, p alpha)4n experiment.

24. quasi-free (p,pn) reaction with Borromean nuclei 11Li,14Be, and 17B

Zaihong Yang (RIKEN)

30/08/2019, 16:10

25. Status report of S24 experiment: Investigation of unbound states in neutron-deficient 66Se

Valerii Panin (RIKEN, Spin-isospin laboratory)

30/08/2019, 16:30

27. HI-α invariant mass spectroscopy

Hideaki Otsu (RIKEN Nishina Center)

30/08/2019, 16:50

28. TBA (RIBFDAQ)

Hidetada Baba (RIKEN)

31/08/2019, 09:30

29. TBA (SAMURAI DAQ)

Masaki Sasano (RIKEN Nishina Center)

31/08/2019, 10:00

32. TBA (SEASTAR)

Pieter Doornenbal (RIKEN)

31/08/2019, 13:20

7. Study of unbound excited states in $^{17}$C

Dr Sunji Kim

31/08/2019, 13:40

A study of unbound excited states in $^{17}$C through one-neutron knockout of $^{18}$C at the energy of 245 MeV/nucleon on a carbon target was performed using the SAMURAI spectrometer. Relative energy spectrum of unbound $^{17}$C was reconstructed from momentum vectors of $^{16}$C fragments and neutrons. The relative energy spectrum was characterized by six resonances at $E_{\rm rel}$ = 0.54,...

34. Study of Gamow-Teller transition in neutron-rich 11Li

Dr Yuma Hirai (Kyusyu University)

31/08/2019, 14:00

35. Analysis status of S31: Probing isospin dependence of nucleon correlations using (p,pN) reaction

Thomas Pohl (TU Darmstadt)

31/08/2019, 14:20

26. Nuclear breakup and Coulomb dissociation of 9C nucleus studied at RIBF RIKEN

Tohru Motobayashi (RIKEN Nishina Center)

31/08/2019, 14:40

36. Experimental study of density dependent symmetry energy at RIBF-SPiRIT

Tadaaki Isobe (RIKEN)

31/08/2019, 15:30

37. Status report of s034: study of 7H and the tetraneutron using 8He(p,2p) reaction

Zaihong Yang (RIKEN)

31/08/2019, 15:50

2. Cluster structure of neutron-rich Beryllium isotopes investigated by cluster quasi-free scattering reaction

Pengjie Li (HKU)

31/08/2019, 16:10

Alpha clustering is the key cornerstone for the complete understanding of the structure of nuclei and fundamental nuclear interactions. So far alpha-particle clustering has dominated cluster states studies among all other possible partitioning. While it is known for long as an important feature of stable N=Z nuclei [1], its existence in exotic nuclei with large imbalance of proton and neutron...

12. Status report of dipole strength measurement performed in S09 and ImPACT

Yasuhiro Togano (Rikkyo University)

31/08/2019, 16:30

I will give a status report on the analysis of the SAMURAI09 experiment.

5. Analysis update on the low-energy dipole response of the halo nuclei $^{6,8}$He

Christopher Lehr (TU Darmstadt)

31/08/2019, 16:50

In July 2017, the SAMURAI37 experiment was performed with the purpose of measuring the multi-neutron decay of $^6$He and $^8$He after heavy-ion-induced electromagnetic excitation in complete kinematics to study the dipole response of these nuclei.
The combination of the neutron detectors NEBULA and NeuLAND at the SAMURAI setup and the high beam intensities available at RIBF made the...

33. TBA (S40+HIME)

Takashi Nakamura (Tokyo Institute of Technology)

HIME