Large, thin solid hydrogen target using para-H 2

Yasuyuki Matsuda,Hidetsugu Sakaguchi,J Zenihiro,Shunsuke Ishimoto,S Suzuki,Hideaki Otsu, T Ohnishi,Hideaki Takeda,Kazutaka Ozeki,Kanji Tanaka,S Terashima,Yoji Maeda, T Kobayashi,Akitoshi Koreeda,Koji Kamei

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment（2011）

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摘要

We have developed a large, thin solid hydrogen target (SHT) that is 30mm in diameter and 1mm thick for elastic scattering of protons from unstable nuclei. By using para-H2 that has a high thermal conductivity at low temperatures, we could prevent sublimation at the target center due to radiation from the higher temperature surroundings. The uniform SHT was used during long-term scattering experiments and it maintained its shape and thickness.

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关键词

Solid hydrogen target,Ortho–para conversion,Para-hydrogen

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