Accession Number : AD0711285

Title :   A NUMERICAL INVESTIGATION OF THE DEUTERON GROUND STATE.

Descriptive Note : Research rept.,

Corporate Author : NAVAL ACADEMY ANNAPOLIS MD

Personal Author(s) : Cahill,Philip T.

Report Date : 15 MAY 1970

Pagination or Media Count : 73

Abstract : Schrodinger's equation is used to compute the energy depth and range parameters used in various forms for the potential experienced by the two nucleons of the deuteron in its ground state. Analytic expressions for the wave function, effective range, scattering length, and root-mean-square radius for that system under the influence of a spherical square well are determined. For the more complex cases of potentials with exponential forms in them (excluding the cut-off exponential), analytic solutions are not so readily attainable; accordingly, a numerical scheme involving the Numerov iteration technique, a Runge-Kutta method particularly useful for second-order differential equations lacking first order terms and suggested by Raynal, was set up and programmed for use on the COMNET computer system using BASIC as the primary language. Parameters for various potentials were calculated and, as a result a new picture of the nucleus developed. While a complete search scheme for these parameters could not be formed, three programs were written which can, with a minimum of assistance from the programmer, determine the parameters for potential forms involving four arbitrary constants. Among the criteria they use are the values of the binding energy, scattering length, effective range, and root-mean-square radius. (Author)

Descriptors :   (*DEUTERONS, GROUND STATE), (*NUCLEAR FORCES, POTENTIAL SCATTERING), NUCLEAR ENERGY LEVELS, QUANTUM THEORY, WAVE FUNCTIONS, INTEGRALS, NUMERICAL INTEGRATION, PARTIAL DIFFERENTIAL EQUATIONS, COMPUTER PROGRAMS

Subject Categories : Nuclear Physics & Elementary Particle Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE