Chinese Physics C > 1983, Vol. 7 > Issue(4): 401-407

MEASUREMENT OF THE ABSOLUTE VERTICAL INTENSITY AND MOMENTUM SPECTRUM OF COSMIC-RAY MUONS AT SEA LEVEL OF BEIJING DISTRICT

Second Experimental Group of the Institute of High Energy Physics

Second Experimental Group of the Institute of High Energy Physics

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Abstract：
The absolute vertical intensity and momentum spectrum of cosmic-ray muons at sea level of Beijing district has measured with a range spectrometer composed by a counter telescope system of four large area scintillation counters (two plastic and two liquid scintillators) and a pile of Pb absorber. In addition, a 70×50×30cm ³streamer chamber was used as a track detector for shower rejection. The integral spectrum of the momentum was measured from 0.2GeV/c to 1.3 GeV/c. The integral flux at 0.3 GeV/c is 9.2××10 ^－3sr ^－1cm ^－2s ^－1. The ratio of shower rejection is about 30% obtained by scanning streamer tracks from 1.6×10 ⁴photographs.

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Second Experimental Group of the Institute of High Energy Physics. MEASUREMENT OF THE ABSOLUTE VERTICAL INTENSITY AND MOMENTUM SPECTRUM OF COSMIC-RAY MUONS AT SEA LEVEL OF BEIJING DISTRICT[J]. Chinese Physics C, 1983, 7(4): 401-407.

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Received: 1900-01-01
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

MEASUREMENT OF THE ABSOLUTE VERTICAL INTENSITY AND MOMENTUM SPECTRUM OF COSMIC-RAY MUONS AT SEA LEVEL OF BEIJING DISTRICT

Second Experimental Group of the Institute of High Energy Physics

Received Date:1900-01-01

Accepted Date:1900-01-01

Available Online:1983-08-05

Abstract:The absolute vertical intensity and momentum spectrum of cosmic-ray muons at sea level of Beijing district has measured with a range spectrometer composed by a counter telescope system of four large area scintillation counters (two plastic and two liquid scintillators) and a pile of Pb absorber. In addition, a 70×50×30cm³streamer chamber was used as a track detector for shower rejection. The integral spectrum of the momentum was measured from 0.2GeV/c to 1.3 GeV/c. The integral flux at 0.3 GeV/c is 9.2××10^－3sr^－1cm^－2s^－1. The ratio of shower rejection is about 30% obtained by scanning streamer tracks from 1.6×10⁴photographs.

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MEASUREMENT OF THE ABSOLUTE VERTICAL INTENSITY AND MOMENTUM SPECTRUM OF COSMIC-RAY MUONS AT SEA LEVEL OF BEIJING DISTRICT

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MEASUREMENT OF THE ABSOLUTE VERTICAL INTENSITY AND MOMENTUM SPECTRUM OF COSMIC-RAY MUONS AT SEA LEVEL OF BEIJING DISTRICT

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