English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

The existing nuclear masses formula and nuclear masses model has undoubtedlyachieved very good results, but it is still not satisfactory for some nuclearmasses. Although there are many studies in Odd-Even staggering (OES) of nuclearmasses, but the research on nuclear masses by using the systematicness of OESis indeed very few. Our purpose in this paper is to describe an empiricalformula for Odd-Even staggering of nuclear masses that can be useful indescribing and predicting nuclear masses. We empirically obtained the formulaof odd-Z (odd-N) nuclei and even-Z (even-N) nuclei based on studying the OES ofnuclear masses (AME2012). With the proton (neutron) empirical pairing gap fromthe OES of the binding energies and AME2012 database, the root-mean-squaredeviation of even-Z nuclei and odd-Z nuclei that we have successfully obtained208 keV and 238 keV, respectively. The RMSD of even-N nuclei and odd-N nucleiis 222 keV and 240 keV. The result shows that our predicted values are comparedwell with values in AME2016, and some predicted values agree better with theexperimental values. These results demonstrate that our empirical formulas havegood accuracy and reliability. Another advantage of these formulas is that theyuse less known nuclear masses to predict unknown nuclear masses. In addition,this paper also uses BP neural network to study proton Odd-Even staggering ofnuclear masses (even-Z and odd-Z nuclei) and neutron Odd-Even staggering ofnuclear masses (even-N and odd-N nuclei). The RMSD of even-Z and odd-Z nucleiis 141 keV and 159 keV; the RMSD of even-N and odd-N nuclei is 150 keV and 160keV. The results show that the RMSD of nuclear masses based on neural network60-80 keV decrease than that based on empirical formula (the accuracy isincreased by about 32%). Accurate nuclear mass is helpful to the research ofnuclear physics, nuclear technology and astrophysics.

The study of Nuclear binding energy for $A\geq100$ based on Odd-Even staggering of nuclear masses