Impact Parameter

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impact parameter

[′im‚pakt pə‚ram·əd·ər]
(nuclear physics)
In a nuclear collision, the perpendicular distance from the target nucleus to the initial line of motion of the incident particle.

Impact Parameter


in the classical theory of particle scattering, the perpendicular distance between the scattering center of force and the original line of motion of the scattering particle.

References in periodicals archive ?
where [omega] is the electron impact parameter (nm) that can be found in the standard tables [N.
He extended the standard theory of light deflection, his method being equivalent to minimising the action integral for a light ray with small impact parameter starting from infinity; for orbits in the plane [phi] = [pi]/2,
The impact parameter is made up by the export price elasticity, multiplied by the share of exports in GDP.
This article introduces an alternative impact parameter for group-based RCTs with student mobility--the survivor average causal effect ("SACE")--that pertains to the subpopulation of original cohort students who would remain in their baseline study schools in either the treatment or control condition.
Hence, the impact parameter used was the targeted value of that impact indicator, if specified/documented for particular site (e.
A positive value of the self-similarity impact parameter means that the specified frame traffic weakens the self-similarity of aggregated frame traffic, and vice versa.
To determine the energy loss per unit distance traveled for collisions with impact parameter greater than bmin, we may use the expression
The average of the scores of the individual impact parameter ratings gave the CEI for each mode.
The focus was shifted towards studying impact parameters of asteroids on the surface of the dwarf planet.
The assessment encompasses the modeling of all relevant scenarios and processes as a result of targeted air crash (development of evaluation criteria, selection of transport aircraft and impact parameters, mechanical and thermal impacts, building and container behavior under mechanical and thermal effects, modeling, if necessary, under stellender releases, identifying radiological consequences).
The recorded data and impact parameters suggest that the accident occurred following a loss of control, possibly in cloud.
Vehicle and/or impact parameters that are not known exactly in a given crash, but are known to generally fall within certain ranges, for example, frictional drag coefficients and/or the coefficient of restitution, can be bounded through the use of constraints within Solver to narrow the range of possible solutions.

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