Stability island near the neutron-rich 40O isotope

2009 ◽  
pp. 353-354
Author(s):  
K. A. Gridnev ◽  
D. K. Gridnev ◽  
V. G. Kartavenko ◽  
V. E. Mitroshin ◽  
V. N. Tarasov ◽  
...  
Keyword(s):  
Stability Island

Acceptance of the quadrupole mass filter in the upper stability island under biharmonic excitation

2009 ◽  
Vol 54 (5) ◽  
pp. 698-703 ◽  
Author(s):  
N. V. Konenkov ◽  
M. N. Makhmudov ◽  
Yu. V. Strashnov
Keyword(s):  
Quadrupole Mass Filter ◽  
Quadrupole Mass ◽  
Mass Filter ◽  
Stability Island

Search for the “stability island” of superheavy nuclei using natural track detectors

2017 ◽  
Vol 44 (11) ◽  
pp. 336-339 ◽  
Author(s):  
V. A. Alekseev ◽  
A. V. Bagulya ◽  
A. E. Volkov ◽  
A. A. Gippius ◽  
L. A. Goncharova ◽  
...  
Keyword(s):  
Superheavy Nuclei ◽  
Stability Island ◽  
The Stability

MODEL OF BINDING ALPHA-PARTICLES AND APPLICATIONS TO SUPERHEAVY ELEMENTS

2005 ◽  
Vol 14 (04) ◽  
pp. 635-643 ◽  
Author(s):  
K. A. GRIDNEV ◽  
S. YU. TORILOV ◽  
D. K. GRIDNEV ◽  
V. G. KARTAVENKO ◽  
W. GREINER
Keyword(s):  
Pair Potential ◽  
Total Potential Energy ◽  
Binding Energies ◽  
Alpha Particles ◽  
Superheavy Nuclei ◽  
Lennard Jones ◽  
Total Potential ◽  
Stability Island ◽  
The Stability ◽  
Good Agreement

A model of nuclear matter built from alpha-particles is proposed. In this model, nuclei possess the molecular-like structure. Analyzing the numbers of bonds, one gets the formula for the binding energy of a nucleus. The structure is determined by the minimum of the total potential energy, where interaction between alpha-particles is pairwise and the pair-potential is of Lennard–Jones type. The calculated binding energies show a good agreement with experiment. Calculations predict the stability island for superheavy nuclei around Z=120.

Quadrupole mass filter acceptance in stability island created by double-frequency quadrupole excitation

2018 ◽  
Vol 24 (4) ◽  
pp. 315-321
Author(s):  
NV Konenkov ◽  
MA Korzhavchikov ◽  
VA Stepanov ◽  
OE Trunina
Keyword(s):  
Narrow Band ◽  
Quadrupole Mass Filter ◽  
Resonance Excitation ◽  
Quadrupole Mass ◽  
Mass Filter ◽  
Transmission Coefficients ◽  
Double Frequency ◽  
Stability Island ◽  
X Band ◽  
Order Of Magnitude

Increase in quadrupole mass filter resolution at separation in narrow band stability island (X-band) formed by biharmonic resonance excitation of ion oscillation is discussed. X-band and the normal working quadrupole mass filter modes are compared at theoretical resolution of 10,000 and different separation times. Transmission curves, acceptance ellipses parameters, and acceptance characteristics are obtained by numerical simulation. Transmission coefficients are approximately the same in both modes. Dependence of acceptance ellipses parameters on ion inlet phases has a complicated oscillating form in the X-band mode. Acceptance contours calculated for given transition levels have been compared. At low acceptance level, the combined acceptance in the X-band mode was found to be one order of magnitude higher than in the normal mode.

Stability island near the neutron-rich 40O isotope

2005 ◽  
Vol 25 (S1) ◽  
pp. 353-354 ◽  
Author(s):  
K. A. Gridnev ◽  
D. K. Gridnev ◽  
V. G. Kartavenko ◽  
V. E. Mitroshin ◽  
V. N. Tarasov ◽  
...  
Keyword(s):  
Stability Island

scholarly journals On the Behavior of the Generalized Alignment Index (GALI) Method for Regular Motion in Multidimensional Hamiltonian Systems

2020 ◽  
Vol 23 (2) ◽  
pp. 153-164
Author(s):  
H. T. Moges ◽  
Th. Manos ◽  
Ch. Skokos
Keyword(s):  
Numerical Simulations ◽  
Hamiltonian Systems ◽  
Degrees Of Freedom ◽  
Regular Orbit ◽  
Initial Deviation ◽  
Regular Motion ◽  
Fixed Energy ◽  
Stability Island ◽  
Stable Periodic ◽  
The Stability

We investigate the behavior of the Generalized Alignment Index of order k (GALIk ) for regular orbits of multidimensional Hamiltonian systems. The GALIk is an efficient chaos indicator, which asymptotically attains positive values for regular motion when 2≤k ≤N, with N being the dimension (D) of the torus on which the motion occurs. By considering several regular orbits in the neighborhood of two typical simple, stable periodic orbits of the Fermi-Pasta-Ulam-Tsingou (FPUT) β model for various values of the system's degrees of freedom, we show that the asymptotic GALIk values decrease when the order k of the index increases and when the orbit's energy approaches the periodic orbit's destabilization energy where the stability island vanishes, while they increase when the considered regular orbit moves further away from the periodic one for a fixed energy. In addition, by performing extensive numerical simulations we show that the behavior of the index does not depend on the choice of the initial deviation vectors needed for its evaluation.

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