Experimental comparison of performances of ultracold neutron gravity spectrometers
Grant-in-Aid for international Scientific Research
|Allocation Type||Single-year Grants|
|Research Institution||Kyoto University|
UTSURO Masahiko Research Reactor Institute, 原子炉実験所, 教授 (50027421)
TASAKI Seiji Research Reactor Institute, Kyoto University, 原子炉実験所, 助手 (40197348)
EBISAWA Toru Research Reactor Institute, Kyoto University, 原子炉実験所, 助手 (30027453)
KAWABATA Yuji Research Reactor Institute, Kyoto University, 原子炉実験所, 助手 (00224840)
FANJAT Norbert Institute for Chemical Research, Kyoto University, 化学研究所, 特別研究員
KANAYA Toshiji Institute for Chemical Research, Kyoto University, 化学研究所, 助教授 (20152788)
KAJI Keisuke Institute for Chemical Research, Kyoto University, 化学研究所, 教授 (00026072)
KOMURA Shigehiro Department of Arts and Sciences, Hiroshima University, 総合科学部, 教授 (50034583)
DREXEL Winfried Institut Laue-Langevin, France, ランジュバン研究所(フランス国), 主任研究員
STEYERL Albert Physics Department, The University of Rhode Island, USA, 物理学科(アメリカ合衆国), 教授
|Project Period (FY)
Completed(Fiscal Year 1991)
|Budget Amount *help
¥3,000,000 (Direct Cost : ¥3,000,000)
Fiscal Year 1991 : ¥3,000,000 (Direct Cost : ¥3,000,000)
|Keywords||Very high resolutions / Scattering angle analyses / Dynamical structure / Neutron optical effects / Spin echo spectrometer / Small angle arrangement|
The characteristic performances of the fall focusing gravity spectrometer with ultracold neutrons developed in our Institute were investigated to be the high resolutions for both of the energy transfer and of the momentum transfer, about 10^<-8> eV and about 10^<-3> A^<o-1>, respectively. These very high resolutions are not attained with any other single machine of neutron spectrometers, but recently a new type of spin echo spectrometer is going to be developed applied with the method of small angle arrangements which should also show similar performances with the present device.
Our fall focusing spectrometer gives the possibility of measurements of various scattering angles simultaneously, which was not possible with the conventional reach focusing gravity spectrometer. This property of scattering angle analyses is very much useful for studying, for example, dynamics of diffusing samples. In the next place, the Characteristic performances of our spectrometer compared to the new type of the small angle spin echo spectrometer were studied in the present investigation and the result was indicated that the gravity spectrometer with ultracold neutrons should give much different dynamical information on the scattering sample due to the neutron optical processes of ultracold neutrons in the scattering processes in the sample.
These much instructive indications derived as the results of the present studies would be effectively applied in the coming applied experiments for several actual scattering samples now under preparation.
Research Output (8results)