Some practical limits on achievable precision of determination of nuclear-physics parameters

TL;DR

This paper reviews the current experimental limits on measuring nuclear parameters like level density and widths, highlighting the uncertainties and the challenges in achieving precise, reliable data for nuclear structure analysis.

Contribution

It introduces a new method for analyzing neutron resonance widths to identify groups with similar wave function structures, and estimates the fundamental precision limits of such measurements.

Findings

Current experimental precision is insufficient for detailed nuclear property analysis.

The new method can distinguish resonance groups with similar wave functions.

Fundamental precision limits restrict reliable nuclear data extraction.

Abstract

The status of experiments on determination of level density and partial widths of the nuclear reaction products emission in diapason of nucleon binding energy is presented. There are analyzed the sources and magnitude of probable systematical uncertainties of their determination. The maximally achievable precision of these parameters is estimated, as well. There is considered ability of new method for determination of distribution parameters of neutron resonances reduced widths in order to distinguish their groups with the same structure of wave functions. It was obtained in both cases that the insufficient value of maximally achievable precision of the parameters of the experimental data analysis does not allow one to obtain reliable and detailed information on the studied nuclear properties -- its entropy, strength functions of nuclear products emission and dominant level structure above 0.5Bn.