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THE MEASUREMENT OF HIGH-ENERGY REFLECTED NEUTRON FROM ALUMINUM WITH THRESHOLD DETECTORS

Lu XinxinInstitute of Nuclear Physics and Chemistry，CAEP P.O.Box 919-213 Mianyang of Sichuan Prov ， 621900 ， ChinaLiu RongInstitute of Nuclear Physics and Chemistry，CAEP P.O.Box 919-213 Mianyang of Sichuan Prov ， 621900 ， ChinaJiang LiInstitute of Nuclear Physics and Chemistry，CAEP P.O.Box 919-213 Mianyang of Sichuan Prov ， 621900 ， ChinaMei WangInstitute of Nuclear Physics and Chemistry，CAEP P.O.Box 919-213 Mianyang of Sichuan Prov ， 621900 ， China

2007en

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Litsenziya: cc-by-nc-sa

ABI

Annotatsiya

Absolute activation reaction rates of high-energy neutrons from an Al reflector are obtained using six different high-threshold neutron-activation detectors.For the different activation detectors the shape of the rates as function of the measurement angle is rather similar.Measured reflectivities are also obtained as the ratio of measured data and range from 1.0 to 1.14.The intensity of the reflected high-energy neutron field is high at large angles and smaller towards smaller angles.With increasing thresholds of the activation detectors, the reflectivities decrease.Evaluated total uncertainties of the measured reflectivities are 3.4%~4.2%.Calculated results of reflectivities agree with the experimental results at the majority of the measuring points.

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DOI: 10.22323/1.025.0051

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