scholarly journals Comparison between experimental data and Monte-Carlo simulations of neutron production in spallation reactions of 0.7-1.5 GeV protons on a thick, lead target

2006 ◽  
Vol 41 ◽  
pp. 306-314 ◽  
Author(s):  
A Krása ◽  
M Majerle ◽  
F Krízek ◽  
V Wagner ◽  
A Kugler ◽  
...  
Keyword(s):  
Experimental Data ◽  
Monte Carlo ◽  
Monte Carlo Simulations ◽  
Neutron Production ◽  
Lead Target ◽  
Spallation Reactions ◽  
Thick Lead ◽  
Thick Lead Target

scholarly journals Experimental studies and simulations of spallation neutron production on a thick lead target

2006 ◽  
Vol 41 ◽  
pp. 331-339 ◽  
Author(s):  
M Majerle ◽  
J Adam ◽  
P Caloun ◽  
S A Gustov ◽  
V Henzl ◽  
...  
Keyword(s):  
Experimental Studies ◽  
Neutron Production ◽  
Lead Target ◽  
Thick Lead ◽  
Thick Lead Target

Density distribution of the photoneutron flux in a thick lead target

1984 ◽  
Vol 57 (3) ◽  
pp. 668-670
Author(s):  
V. I. Kasilov ◽  
N. I. Lapin ◽  
S. F. Shcherbak
Keyword(s):  
Density Distribution ◽  
Lead Target ◽  
Thick Lead ◽  
Thick Lead Target

scholarly journals FLUCTUATIONS OF SINGLE CONFINED ACTIN FILAMENTS

2007 ◽  
Vol 02 (02) ◽  
pp. 155-166 ◽  
Author(s):  
SARAH KÖSTER ◽  
HOLGER STARK ◽  
THOMAS PFOHL ◽  
JAN KIERFELD
Keyword(s):  
Experimental Data ◽  
Monte Carlo ◽  
Correlation Function ◽  
Monte Carlo Simulations ◽  
Actin Filaments ◽  
Persistence Length ◽  
Mesh Size ◽  
Thermal Fluctuations ◽  
Approximation Formula ◽  
Bending Rigidity

Thermal fluctuations of individual actin filaments confined in rectangular microchannels with dimensions similar to the mesh size of the cytoskeleton in eukaryotic cells are studied experimentally using fluorescence microscopy and theoretically by a combination of analytical methods and Monte Carlo simulations. Compared to freely fluctuating filaments, long filaments confined in narrow channels exhibit enhanced tangent correlations and a characteristic shape of their correlation function. The tangent correlation function is calculated analytically by approximating the confining geometry by a parabolic potential. This approximation is validated by Monte Carlo simulations. For the quantitative analysis of experimental data additional corrections for image analysis effects have to be included, for which we provide a modified analytical approximation formula which is corroborated by simulations. This allows us to obtain both the persistence length LP describing the bending rigidity of the polymer and the deflection length λ characterizing confinement effects from fits to the experimental data. Our results confirm the scaling relation λ ∝ d2/3 between the deflection length and the channel width d.

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