Charge identification of highly ionizing particles in desensitized nuclear emulsion using high speed read-out system

We performed an experimental study of charge identification of heavy ions from helium to carbon having energy of about 290 MeV / u using an emulsion chamber. Emulsion was desensitized by means of forced fading (refreshing) to expand a dynamic range of response to highly charged particles. For the tr...

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Bibliographic Details
Published in:Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment Accelerators, spectrometers, detectors and associated equipment, 2006-01, Vol.556 (2), p.482-489
Main Authors: Toshito, T., Kodama, K., Yusa, K., Ozaki, M., Amako, K., Kameoka, S., Murakami, K., Sasaki, T., Aoki, S., Ban, T., Fukuda, T., Naganawa, N., Nakamura, T., Natsume, M., Niwa, K., Takahashi, S., Kanazawa, M., Kanematsu, N., Komori, M., Sato, S., Asai, M., Koi, T., Fukushima, C., Ogawa, S., Shibasaki, M., Shibuya, H.
Format: Article
Language:English
Subjects:
ATOMIC AND MOLECULAR PHYSICS
CARBON
Charge identification
CHARGED PARTICLES
Emulsion chamber
Film refreshing
Heavy ion
HEAVY IONS
HELIUM
Instrumentation,INST
Nuclear emulsion
NUCLEAR EMULSIONS
PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
VELOCITY
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Summary:We performed an experimental study of charge identification of heavy ions from helium to carbon having energy of about 290 MeV / u using an emulsion chamber. Emulsion was desensitized by means of forced fading (refreshing) to expand a dynamic range of response to highly charged particles. For the track reconstruction and charge identification, the fully automated high speed emulsion read-out system, which was originally developed for identifying minimum ionizing particles, was used without any modification. Clear track by track charge identification up to Z = 6 was demonstrated. The refreshing technique has proved to be a powerful technique to expand response of emulsion film to highly ionizing particles.
ISSN:0168-9002
1872-9576
DOI:10.1016/j.nima.2005.11.047