Study of Double-strangeness Nuclear Systems with Nuclear Emulsion

Kazuma Nakazawa, Yoko Endo, Kaoru Hoshino, Hiroki Ito, Shinji Kinbara, Hidetaka Kobayashi, Akihiro Mishina, Myint Kyaw Soe, Aye Moh Moh Theint, Rong Xu, Khin Than Tint, Jun'Ya Yoshida, Dong Hai Zhang

Research output: Contribution to journalConference articlepeer-review

7 Citations (Scopus)


Double strangeness nuclei such as double-Λ and Ξ hypernuclei have been studied with nuclear emulsion due to its fine position resolution. Recently, we have started an experiment to study Λ-Λ interaction more accurately than that information given by the NAGARA event with ∼102 double-Λ hypernuclei which may provide us understanding free from nuclear medium effect. It is necessary to develop treatment method for huge amount, 2.1 tons of the emulsion gel, even if very pure K- beams are available at J-PARC. We have developed the base film to support the emulsion, emulsion surface coating method with a special layer of 0.5 μm thick, method for making large-size plate (35.0 x 34.5 cm2) and scanning method, called "overall scanning". The first evidence of a deeply bound state of Ξ--14N system, named KISO, was successfully detected in the test operation of the overall scanning.

Original languageEnglish
Pages (from-to)69-73
Number of pages5
JournalPhysics Procedia
Publication statusPublished - 2015
Event26th International Conference on Nuclear Tracks in Solids, ICNTS 2014 - Kobe, Japan
Duration: 2014 Sept 152014 Sept 19


  • double-Λ hypernucleus
  • Nuclear emulsion
  • plate making
  • Ξ hypernucleus


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