scholarly journals Nuclear masses, chaos, and the residual interaction

2006 ◽  
Vol 637 (1-2) ◽  
pp. 48-52 ◽  
Author(s):  
A. Molinari ◽  
H.A. Weidenmüller
Keyword(s):  
Residual Interaction ◽  
Nuclear Masses

scholarly journals Description and prediction of even-A nuclear masses based on residual proton–neutron interactions

2018 ◽  
Vol 33 (27) ◽  
pp. 1850156 ◽  
Author(s):  
Baobao Jiao
Keyword(s):  
Mass Number ◽  
Residual Interaction ◽  
Nucleon Pair ◽  
Heavy Nuclei ◽  
Pair Correlations ◽  
The Past ◽  
Nuclear Masses ◽  
Left Corner ◽  
Predicted Values ◽  
Experimental Values

The odd–even staggering of neighboring nuclear masses is very useful in calculating local mass relations and nucleon-pair correlations. During the past decades, there has been an increasing interest in the odd–even features of the mass relations and related quantities exhibited in masses of neighboring nuclei. In this work, after choosing a nucleus, we made an analysis of its neighboring nuclei on the upper left corner and the lower right corner, respectively. We empirically obtained a new residual interaction formula of even-A (A is the mass number) nuclei, and it is a revision based on the existing empirical local formula of the proton–neutron interactions between the last proton and the last neutron [Formula: see text]. We then calculated the even-A nuclear masses. The differences between our calculated values and the AME2012 database show that the root-mean-squared deviations (RMSD) are small (for even-A nuclei: A[Formula: see text]42, RMSD[Formula: see text]161 keV; A[Formula: see text]100, RMSD[Formula: see text]125 keV), while for heavy nuclei, some of our calculated values can reach an accuracy of a few tens of keV. With our residual interaction formula including one parameter, we have successfully predicted some unknown masses. Some of our predicted values are compared well with the experimental values (AME2016). In addition, the accuracy and simplicity of our predicted masses for medium and heavy nuclei are comparable to those of the AME2012 (AME2016) extrapolations.

scholarly journals Nuclear mass measurements with radioactive ion beams

2019 ◽  
Vol 28 (04) ◽  
pp. 1930005 ◽  
Author(s):  
Michael A. Famiano
Keyword(s):  
Mass Measurement ◽  
Measurement Techniques ◽  
Nuclear Mass ◽  
Mass Measurements ◽  
Future Directions ◽  
Advantages And Disadvantages ◽  
Nuclear Masses ◽  
Under Construction ◽  
Very High ◽  
Practical Constraints

Nuclear masses are the most fundamental of all nuclear properties, yet they can provide a wealth of knowledge, including information on astrophysical sites, constraints on existing theory, and fundamental symmetries. In nearly all applications, it is necessary to measure nuclear masses with very high precision. As mass measurements push to more short-lived and more massive nuclei, the practical constraints on mass measurement techniques become more exacting. Various techniques used to measure nuclear masses, including their advantages and disadvantages are described. Descriptions of some of the world facilities at which the nuclear mass measurements are performed are given, and brief summaries of planned facilities are presented. Future directions are mentioned, and conclusions are presented which provide a possible outlook and emphasis on upcoming plans for nuclear mass measurements at existing facilities, those under construction, and those being planned.

scholarly journals Nuclear masses, deformations and shell effects

2011 ◽  
Vol 322 ◽  
pp. 012017 ◽  
Author(s):  
Jorge G Hirsch ◽  
César A Barbero ◽  
Alejandro E Mariano
Keyword(s):  
Shell Effects ◽  
Nuclear Masses

scholarly journals Nuclear masses and the origin of the elements

2006 ◽  
Vol 37 (5) ◽  
pp. 16-21 ◽  
Author(s):  
Hendrik Schatz ◽  
Klaus Blaum
Keyword(s):  
Nuclear Masses

scholarly journals Non-laminar cerebral cortex in teleost fishes?

2008 ◽  
Vol 5 (1) ◽  
pp. 117-121 ◽  
Author(s):  
Hironobu Ito ◽  
Naoyuki Yamamoto
Keyword(s):  
Cerebral Cortex ◽  
Neural Circuits ◽  
Dimensional Space ◽  
Three Dimensional ◽  
Teleost Fishes ◽  
Nuclear Masses ◽  
Cerebral Neocortex ◽  
Three Dimensional Space

A large skull is disadvantageous to animals that move quickly in three-dimensional space, such as fishes and birds in water or air. A cerebral neocortex with a six-layered sheet has not evolved, most likely due to the limited cranial space. Instead of the laminar cortex, telencephalic nuclear masses seem to have evolved as the pallium in teleost fishes. We consider that the nuclear masses contain rather simple neural circuits sharing a skeleton of simple circuits in the mammalian cortex, which have been elaborated by additional circuits in mammals. Such basic similarities at the connectional level shared by nuclear and cortical pallium might underlie similar or equivalent functions.

Mapping of Nuclear Masses in the Region (N ≤ 126, Z ≥ 82) from Direct Measurements of Francium Isotopes

1980 ◽  
pp. 281-289
Author(s):  
G. Audi ◽  
M. Epherre ◽  
C. Thibault ◽  
R. Klapisch ◽  
G. Huber ◽  
...  
Keyword(s):  
Direct Measurements ◽  
Nuclear Masses

scholarly journals Exploring the astrophysical conditions for the creation of the first r-process peak, and the impact of nuclear physics uncertainties

2020 ◽  
Vol 27 ◽  
pp. 175
Author(s):  
Stylianos Nikas ◽  
G. Martínez-Pinedo ◽  
M. R. Wu ◽  
A. Sieverding ◽  
M. P. Reiter
Keyword(s):  
Beta Decay ◽  
Nuclear Physics ◽  
Decay Rates ◽  
Abundance Pattern ◽  
Nuclear Masses ◽  
The Creation ◽  
R Process ◽  
The Impact

We present a study of nucleosynthesis for conditions of high Ye outflows from NeutronStar Mergers (NSMs). We investigate the effect of new beta-decay rates measurements and uncertaintiesin nuclear masses of the newly measured 84,85 Ga to the r-process nucleosynthesis calculations. The impactof these quantities to the production of the elements of the r-process abundance pattern for A < 100 isquantified and presented.

Sign in / Sign up

Export Citation Format

Share Document