Latitude, altitude and primary modulation effects on the multiplicity distribution in the NM-64 neutron monitors

1971 ◽  
Vol 6 (2) ◽  
pp. 111-123 ◽  
Author(s):  
N. Iucci ◽  
M. Storini ◽  
G. Villoresi ◽  
W. K. Griffiths
Keyword(s):  
Multiplicity Distribution ◽  
Neutron Monitors

Latitude, altitude and primary modulation effects on the multiplicity distribution in the nm 64 neutron monitors

1972 ◽  
Vol 8 (1) ◽  
pp. 283-283
Author(s):  
N. Iucci ◽  
M. Sartorini ◽  
G. Villoresi ◽  
W. K. Griffiths
Keyword(s):  
Multiplicity Distribution ◽  
Neutron Monitors

Multiplicity measurements on the IGY and NM64 neutron monitors

1968 ◽  
Vol 46 (10) ◽  
pp. S1057-S1060 ◽  
Author(s):  
F. Bachelet ◽  
E. Dyring ◽  
N. Iucci
Keyword(s):  
Multiplicity Distribution ◽  
Neutron Monitors ◽  
Attenuation Coefficients ◽  
Preliminary Results ◽  
Time Changes ◽  
The Individual

Preliminary results are given of the analysis of the continuous recordings of the detected multiplicity distribution obtained at the Uppsala IGY monitor and at the Rome supermonitor in the first months of 1967. The relative frequencies and the attenuation coefficients of the individual multiplicities as measured at both monitors are compared. The time changes of the multiplicity distribution on the occasion of substantial primary spectral variations are studied.

SOME CHARACTERISTICS OF THE COMPOUND MULTIPLICITY IN HIGH-ENERGY NUCLEUS–NUCLEUS INTERACTIONS

2011 ◽  
Vol 20 (08) ◽  
pp. 1735-1754 ◽  
Author(s):  
M. MOHERY ◽  
M. ARAFA
Keyword(s):  
Experimental Data ◽  
Impact Parameter ◽  
Mass Number ◽  
Multiplicity Distribution ◽  
High Energy ◽  
Projectile Nucleus ◽  
Target Mass ◽  
Compound Multiplicity ◽  
Multiplicity Distributions ◽  
The Impact

The present paper deals with the interactions of 22 Ne and 28 Si nuclei at (4.1–4.5)A GeV /c with emulsion. Some characteristics of the compound multiplicity nc given by the sum of the number of shower particles ns and grey particles ng have been investigated. The present experimental data are compared with the corresponding ones calculated according to modified cascade evaporation model (MCEM). The results reveal that the compound multiplicity distributions for these two reactions are consistent with the corresponding ones of MCEM data. It can also be seen that the peak of these distributions shifts towards a higher value of nc with increasing projectile mass. It may further be seen that the compound multiplicity distributions becomes broader with increasing target size and its width increases with the size of the projectile nucleus. In addition, it has been found that the MCEM can describe the compound multiplicity characteristics of the different projectile, target and the correlation between different emitted particles. The values of average compound multiplicity increase with increasing mass of the projectile. Furthermore, it is observed that while the value of 〈nc〉 depends on the mass number of the projectile Ap and the target mass number At, the value of the ratio 〈nc〉/D(nc) seems to be independent of Ap and At. The impact parameter is found to affect the shape of the compound multiplicity distribution. Finally, the dependence of the average compound multiplicity on the numbers of grey and black particles, and the sum of them, is obvious. The values of the slope have been found to be independent of the projectile nucleus.

On the multiplicity distribution ine+e−→hadrons

1986 ◽  
Vol 33 (1) ◽  
pp. 39-45 ◽  
Author(s):  
A. Białas ◽  
F. Hayot
Keyword(s):  
Multiplicity Distribution

scholarly journals Development of a ground level enhancement alarm system based upon neutron monitors

Space Weather ◽  
2006 ◽  
Vol 4 (10) ◽  
pp. n/a-n/a ◽  
Author(s):  
T. Kuwabara ◽  
J. W. Bieber ◽  
J. Clem ◽  
P. Evenson ◽  
R. Pyle
Keyword(s):  
Ground Level ◽  
Alarm System ◽  
Neutron Monitors ◽  
Ground Level Enhancement

SYSTEMATIC COMPARISON OF THE EXPERIMENTAL DATA WITH THE FRITIOF MODEL IN NUCLEUS–NUCLEUS INTERACTIONS WITH LIGHT AND HEAVY TARGET NUCLEI IN NUCLEAR EMULSION AT 4.5A Gev/c

2002 ◽  
Vol 11 (02) ◽  
pp. 161-175 ◽  
Author(s):  
M. MOHERY ◽  
N. N. ABD-ALLAH
Keyword(s):  
Experimental Data ◽  
Nuclear Emulsion ◽  
Multiplicity Distribution ◽  
Angular Distributions ◽  
Target Groups ◽  
Systematic Comparison ◽  
Secondary Particles ◽  
Heavy Target ◽  
Light Target ◽  
Fritiof Model

The characteristics of the interactions of 4.5 A GeV/c 28 Si nuclei with emulsion have been investigated. The method of separating interactions into those with hydrogen, light and heavy target nuclei has been discussed. The multiplicity distribution, average multiplicities, multiplicity correlation and the angular distributions of the secondary particles emitted in 28 Si -emulsion are calculated according to the Modified Fritiof Model and compared with the experimental data and with other available data for p, 12 C , 24 Mg at the same energy. It has been found that the modified Fritiof model can describe the multiplicity characteristics of the different emitted particles in the above-mentioned interaction with different target groups. The comparison of the experimental data with the modified Fritiof model shows no clear preference for the case of the light target while it seems to be nearer to the experimental data in the case of the heavy target and the emulsion

GLOBAL PROPERTIES OF MULTIPLICITY DISTRIBUTIONS AND MULTIPLICITY CORRELATIONS IN e+e- ANNIHILATION AT LEP ENERGIES AS A MEASURE OF COHERENT DYNAMICS

1991 ◽  
Vol 06 (01) ◽  
pp. 55-60 ◽  
Author(s):  
SAUL BARSHAY
Keyword(s):  
Multiplicity Distribution ◽  
Dynamical Processes ◽  
Global Properties ◽  
Coherent Dynamics ◽  
Multiplicity Distributions

We study the possibility of the observable emergence of dynamical forward-backward multiplicity correlations among produced charge hadrons, and of a steadily broadening multiplicity distribution in e+e- annihilation at LEP. It is important to measure three related global properties. These reflect coherent dynamical processes in and among jets.

scholarly journals Long-term stability of the neutron monitors global network for overall monitoring period

2019 ◽  
Vol 1181 ◽  
pp. 012063
Author(s):  
A V Belov ◽  
R T Gushchina ◽  
E A Eroshenko ◽  
A A Abunin ◽  
P G Kobelev ◽  
...  
Keyword(s):  
Global Network ◽  
Neutron Monitors ◽  
Monitoring Period ◽  
Term Stability ◽  
Long Term Stability
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