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1. chinaXiv:201711.00369 [pdf]

Spatial-temporal variations in near-surface soil freeze-thaw cycles in the source region of the Yellow River during the period 2002-2011 based on the Advanced Microwave Scanning Radiometer for the Earth Observing System (AMSR-E) data

WANG Rui; ZHU Qingke; MA Hao; AI Ning
Subjects: Geosciences >> Geography

Detecting near-surface soil freeze-thaw cycles in high-altitude cold regions is important for understanding the Earth's surface system, but such studies are rare. In this study we detected the spatial-temporal variations in near-surface soil freeze-thaw cycles in the source region of the Yellow River during the period 2002-2011 based on data from the Advanced Microwave Scanning Radiometer for the Earth Observing System

submitted time 2017-11-07 From cooperative journals:《Journal of Arid Land》 Hits1853Downloads936 Comment 0

2. chinaXiv:201608.00218 [pdf]

Characterization study of a broad-energy germanium detector at CJPL

ZENG Zhi; MI Yuhao; ZENG Ming; MA Hao; YUE Qian; CHENG Jianping; LI Junli; QIU Rui; ZHANG Hui
Subjects: Physics >> Nuclear Physics

The ability of background discrimination using pulse shape discrimination (PSD) in broad-energy germanium (BEGe) detectors makes them as competitive candidates for neutrinoless double beta decay (0{\nu}\b{eta}\b{eta}) experiments. The measurements of key parameters for detector modeling in a commercial p-type BEGe detector are presented in this paper. Point-like sources were used to investigate the energy resolution and linearity of the detector. A cylindrical volume source was used for the efficiency calibration. With an assembled device for source positioning, a collimated 133Ba point-like source was used to scan the detector and investigate the active volume. A point-like source of 241Am was used to measure the dead layer thicknesses, which are approximately 0.17 mm on the front and 1.18 mm on the side. The described characterization method will play an important role in the 0{\nu}\b{eta}\b{eta} experiments with BEGe detectors at China JinPing underground Laboratory (CJPL) in the future.

submitted time 2016-08-31 Hits1291Downloads737 Comment 0

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