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Determination of scattering amplitudes from differential cross section data by using unitarity conditions

Abstract

A modification to the newton iteration method has been used to solve the nonlinear equation that specifies the phase of the scattering amplitude in terms of the complete (0 to 180 deg) cross section. The approach is tested by using it to specify the scattering amplitude from simulated data and comparing the result with the amplitude found by using an extract iterated fixed point method of solution. The modified Newton method was then used to analyse the cross sections from neutron-alpha particle scattering at low nuclear energies (< 24 MeV) and from 1000 eV electron-water molecule scattering. 13 refs., 5 figs.
Publication Date:
Dec 31, 1994
Product Type:
Technical Report
Report Number:
UM-P-94/43
Reference Number:
SCA: 663300; PA: AIX-26:018265; EDB-95:032532; SN: 95001330135
Resource Relation:
Other Information: PBD: [1994]
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; ELASTIC SCATTERING; DIFFERENTIAL CROSS SECTIONS; SCATTERING AMPLITUDES; NEWTON METHOD; ALPHA PARTICLES; ELECTRON-MOLECULE COLLISIONS; EXPERIMENTAL DATA; INVERSE SCATTERING PROBLEM; MEV RANGE 10-100; NEUTRONS; TWO-DIMENSIONAL CALCULATIONS; 663300; NUCLEAR REACTIONS AND SCATTERING, GENERAL
OSTI ID:
10113785
Research Organizations:
Melbourne Univ., Parkville, VIC (Australia). School of Physics
Country of Origin:
Australia
Language:
English
Other Identifying Numbers:
Other: ON: DE95616407; TRN: AU9414213018265
Availability:
OSTI; NTIS (US Sales Only); INIS
Submitting Site:
INIS
Size:
21 p.
Announcement Date:
Jun 30, 2005

Citation Formats

Lun, D R, Allen, L J, and Amos, K. Determination of scattering amplitudes from differential cross section data by using unitarity conditions. Australia: N. p., 1994. Web.
Lun, D R, Allen, L J, &amp; Amos, K. Determination of scattering amplitudes from differential cross section data by using unitarity conditions. Australia.
Lun, D R, Allen, L J, and Amos, K. 1994. "Determination of scattering amplitudes from differential cross section data by using unitarity conditions." Australia.
@misc{etde_10113785,
title = {Determination of scattering amplitudes from differential cross section data by using unitarity conditions}
author = {Lun, D R, Allen, L J, and Amos, K}
abstractNote = {A modification to the newton iteration method has been used to solve the nonlinear equation that specifies the phase of the scattering amplitude in terms of the complete (0 to 180 deg) cross section. The approach is tested by using it to specify the scattering amplitude from simulated data and comparing the result with the amplitude found by using an extract iterated fixed point method of solution. The modified Newton method was then used to analyse the cross sections from neutron-alpha particle scattering at low nuclear energies (< 24 MeV) and from 1000 eV electron-water molecule scattering. 13 refs., 5 figs.}
place = {Australia}
year = {1994}
month = {Dec}
}