THE NEGATIVE-POSITIVE RATIO OF CHARGED COSMIC RAY HADRONS AT THE 3220 m ABOVE SEA-LEVEL

XU CHUN-XIAN; HUO AN-XIANG; YUAN YN-KUI; GU YI-DONG; LI TI-PEI; SHEN PEI-RO; JIA GUEI-BIN; XIAO QIAN-YI; ZHANG CHENG-MO; CHEN DUAN-BAO

Chinese Physics C> 1978, Vol. 2> Issue(5) : 423-427

THE NEGATIVE-POSITIVE RATIO OF CHARGED COSMIC RAY HADRONS AT THE 3220 m ABOVE SEA-LEVEL

Abstract
HTML
Reference
Related

PDF

Abstract：
Single tracks of unaccompanÏed charged hadrons, within a horigontal area of 0.23m² have been measured with a magnetic spectrometer, a pre-selector of momentum in combination with a multiplate cloud chamber in a laboratory at 3220m above sea level. Taking various possible corrections into account, the negative-positive ratio of charged hadrons was obtained as N^-/N⁺=0.53±0.05 in the momentum range of 10-20 GeV/c. If we considered N⁺ contained only P and π⁺, N^-were π^-and that N_π+/N_π-=1, we deduced the result N_π-/N_p=0.9±0.1. Taking the form of the π^-integral spectrum as j（>p）=Kp^-γ, it was estimated that γ（?）2.3 in the momentum range 5—20 GeV/c. In this paper the integral verticel flux intensity of all charged hadrons was also estimated roughly, the result is:j_⊥^p+π（>12 GeV/c）=（7.4±0.7）×10^-5/cm²·sг·s^_.

References

[1]

R. W. Ellsworth et al., 14th Int. C. R. Conf., 7(1975), 2528.[2] R. W. Ellsworth et al., 14th Int. C. R. Conf., 7(1975), 2538.[3] F. Siohan et al., 13th Int, C. R. Conf., 3 (1973), 2135.[4] V. A. Sobinyakov et al., Cana. Jour, of Phys., 10-12 (1968), 686.[5] V. A. Avakian and M. P. Pheshko, Cana Jour of Phys., 10-12 (1968), 709.[6] 荆贵茹等，本期，417.[7] 原子能研究所云南站，物理, 2(1972), 57.[8] 袁余奎等，本期，478.[9] 李惕碚，《实验的数学处理》科学出版社(将出版).

[1]	LI Li , ZHANG Feng , WANG Rui-Guang , CHEN He-Sheng , MA Yu-Qian . Track Finding of Cosmic Multi-muon Events in the L3+C Muon Detector. Chinese Physics C, 2004, 28(7): 749-752.
[2]	LIU Jun , GENG Qing-Xi , YANG Hong-Tao , LIU Chang-Qin , ZHANG Pin , GAO Xiao-Yu , JING Cai-Liu , ZHA Min , JING Gui-Ru , ZHU Qing-Qi , Cheung T , Ng L . Study of EAS Local Muon Density Spectrum and the Knee in the Energy Spectrum of Primary Cosmic Rays. Chinese Physics C, 2003, 27(2): 109-112.
[3]	Xu Chunxian , Dai Hongyue . A Statistic Model for Galactic Cosmic Rays. Chinese Physics C, 1997, 21(6): 486-493.
[4]	Jiang Yinlin . Atmospheric Cherenkov Images of Cosmic Ray Muons. Chinese Physics C, 1995, 19(2): 110-115.
[5]	Qin Keyu . Description of Charged Particle Multiplicity Distribution in High Energy Strong Interaction. Chinese Physics C, 1994, 18(4): 347-352.
[6]	Jia Huanyu , Cao Zhen , Zhang Huimin . The Study of Meteorological Effects on TeV Cosmic Ray Flux. Chinese Physics C, 1994, 18(9): 788-793.
[7]	FAN Xiao-Ling , ZHANG Chun-Sheng . Application of Hadron-Hadron Nuclear Interaction Parametrization Model in the Study of Superhigh Energy Cosmic Rays. Chinese Physics C, 1992, 16(4): 289-296.
[8]	LU Sui-Ling , REN Jing-Ru , SU Shi , WANG Cheng-Rui , HE Mao . Variation of Intensity of High Energy Cosmic Ray Hadrons with Altitude. Chinese Physics C, 1992, 16(5): 390-391.
[9]	CAO Pei-Yuan , WANG Cheng-Rui , HE Mao , ZHANG Nai-Jian , LI Jin-Yu , LI Jie , REN Jing-Ru , LU Sui-Ling . High Energy Gamma Rays and Hadrons in Atmospheric Cosmic Rays. Chinese Physics C, 1992, 16(10): 886-890.
[10]	ZHANG Nai-Jian , WANG Cheng-Rui , HE Mao , CAO Pei-Yuan , LI Jin-Yu , ZOU Bao-Tang , WANG Guang-Jun , WEI Chao . HIGH ENERGY HADRONS IN ATMOSPHERIC COSMIC RAYS OBSERVED WITH Fe EMULSION CHAMBERS. Chinese Physics C, 1989, 13(11): 961-966.
[11]	CHEN Chang , CHEN He-Sheng , LI Huan-Tie , LI Xiao-Guang , LV Yu-Sheng , MAO Yu-Fang , TANG Xiao-Wei , TONG Guo-Liang , WANG Meng-Qi , XU Hong-Zhang , YANG Chang-Gen , YANG Kang-Shu , YANG Qing-Yun , ZHANG Shou-Yu , ZHU Yong-Sheng , ZHUANG Hong-Lin . THE STUDY AND PRODUCTION OF PWC'S FOR THE FIRST MODULE OF L3 HADRON CALORIMETER. Chinese Physics C, 1988, 12(5): 587-592.
[12]	WANG Yun-Xin . ENERGY SPECTRUM OF SUPER HIGH ENERGY COSMIC RAY MUON SHOWERS OF LARGE ZENITH ANGLES. Chinese Physics C, 1986, 10(2): 245-248.
[13]	ZHU Qing-Qi , WU Shi-Pei . SIMULATION CALCULATION FOR DETECTION EFFICIENCY IN THE MEASUREMENT OF COSMIC RAY HADRON SPECTRA. Chinese Physics C, 1985, 9(3): 263-267.
[14]	LI He-Nian , YUAN Yu-Kui , QIN Ke-Yu , ZHU Qing-Qi , WU Shi-Pei , LI Yan-Guo , ZHENG Rong-Ting , HUO An-Xiang . CHARGED HADRONIC MOMENTUM SPECTRA IN THE RANGE (5—50)GeV/c AT MOUNTAIN ALTITUDE. Chinese Physics C, 1985, 9(3): 268-272.
[15]	ZHANG Chun-Sheng , REN Jing-Ru , KUANG Hao-Huai , LU Sui-Ling , LI Ming-Xiang , SU Shi , WANG Yun-Xin , WANG Dian-Chen , FAN Hai-Kun , XUE Yong-Gui , HUO An-Xiang . A STUDY ON THE CHARACTERISTICS OF COSMIC RAY HADRONS AT MT. KAMBALA. Chinese Physics C, 1985, 9(6): 649-652.
[16]	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. Chinese Physics C, 1983, 7(4): 401-407.
[17]	WANG Dian-Rong , WANG Xian-Pei , LI Cheng-Ze , CHEN Yuan-Bai , LIN Jian-Feng , CHANG Chia-Chuan , ZHAO Jing-Wei , JIANG Ying-Yuan , XU Yu-Lin , TANG Su-Qiu , DAI Gui-Liang . THE MEASUREMENT OF THE COSMIC RAY MUON ZENITH ANGLE DISTRIBUTION WITH ON-LINE MICROCOMPUTER. Chinese Physics C, 1983, 7(2): 135-141.
[18]	HUO AN-XIANG , REN JING-RU , LU SUI-LING , KUANG HAO-HUAI , SU SHI , WANG CHENG-RUI , CAO PEI-YUAN , LI JIN-YU . THE ENERGY SPECTRA OF COSMIC RAY HADRONS AT MT.KAMBALA 5500m ABOVE SE LEVEL. Chinese Physics C, 1982, 6(6): 778-780.
[19]	Shen Chang-quan , Zhu Ai-min , Zhang Ren-qing , Yao Wei-zhong , Xu You-an . MEASUREMENT OF INTENSITY AND MOMENTUM SPECTRUM OF HORIZONTAL COSMIC RAY MUON AT 3220m ABOVE SEA LEVEL. Chinese Physics C, 1980, 4(4): 409-412.
[20]	Ding Lin-kai , Zhu Qing-qi . MONTE-CARLO SIMULATION OF COSMIC RAY ANTIPROTON INTENSITY. Chinese Physics C, 1980, 4(6): 735-740.

Access

Get Citation

XU CHUN-XIAN, HUO AN-XIANG, YUAN YN-KUI, GU YI-DONG, LI TI-PEI, SHEN PEI-RO, JIA GUEI-BIN, XIAO QIAN-YI, ZHANG CHENG-MO and CHEN DUAN-BAO. THE NEGATIVE-POSITIVE RATIO OF CHARGED COSMIC RAY HADRONS AT THE 3220 m ABOVE SEA-LEVEL[J]. Chinese Physics C, 1978, 2(5): 423-427.

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

Received: 1978-05-03
Revised: 1900-01-01

Article Metric

Article Views(2110)
PDF Downloads(263)
Cited by(0)

Policy on re-use

To reuse of subscription content published by CPC, the users need to request permission from CPC, unless the content was published under an Open Access license which automatically permits that type of reuse.

通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

THE NEGATIVE-POSITIVE RATIO OF CHARGED COSMIC RAY HADRONS AT THE 3220 m ABOVE SEA-LEVEL

Received Date: 1978-05-03

Accepted Date: 1900-01-01

Available Online: 1978-10-05

Abstract: Single tracks of unaccompanÏed charged hadrons, within a horigontal area of 0.23m² have been measured with a magnetic spectrometer, a pre-selector of momentum in combination with a multiplate cloud chamber in a laboratory at 3220m above sea level. Taking various possible corrections into account, the negative-positive ratio of charged hadrons was obtained as N^-/N⁺=0.53±0.05 in the momentum range of 10-20 GeV/c. If we considered N⁺ contained only P and π⁺, N^-were π^-and that N_π+/N_π-=1, we deduced the result N_π-/N_p=0.9±0.1. Taking the form of the π^-integral spectrum as j（>p）=Kp^-γ, it was estimated that γ（?）2.3 in the momentum range 5—20 GeV/c. In this paper the integral verticel flux intensity of all charged hadrons was also estimated roughly, the result is:j_⊥^p+π（>12 GeV/c）=（7.4±0.7）×10^-5/cm²·sг·s^_.

HTML

Reference (1)

THE NEGATIVE-POSITIVE RATIO OF CHARGED COSMIC RAY HADRONS AT THE 3220 m ABOVE SEA-LEVEL

Abstract：

References

Access

Article Metrics

Metrics

通讯作者: 陈斌, bchen63@163.com

Email This Article

THE NEGATIVE-POSITIVE RATIO OF CHARGED COSMIC RAY HADRONS AT THE 3220 m ABOVE SEA-LEVEL

HTML

目录