scholarly journals Direct measurements of low-energy resonance strengths of the 23Na(p,γ)24Mg reaction for astrophysics

2019 ◽  
Vol 795 ◽  
pp. 122-128 ◽  
Author(s):  
A. Boeltzig ◽  
A. Best ◽  
F.R. Pantaleo ◽  
G. Imbriani ◽  
M. Junker ◽  
...  
Keyword(s):  
Low Energy ◽  
Energy Resonance ◽  
Direct Measurements ◽  
Resonance Strengths

Low-energy resonance strengths for proton capture on Mg and Al nuclei

1998 ◽  
Vol 644 (4) ◽  
pp. 263-276 ◽  
Author(s):  
D.C. Powell ◽  
C. Iliadis ◽  
A.E. Champagne ◽  
S.E. Hale ◽  
V.Y. Hansper ◽  
...  
Keyword(s):  
Low Energy ◽  
Proton Capture ◽  
Energy Resonance ◽  
Resonance Strengths

Fixed-angle method for low-energy resonance calculations

1965 ◽  
Vol 38 (2) ◽  
pp. 872-882 ◽  
Author(s):  
H. Burkhardt ◽  
G. P. McCauley
Keyword(s):  
Low Energy ◽  
Fixed Angle ◽  
Energy Resonance ◽  
Angle Method

Nonlinear Parametric Vibration of the Geometrically Imperfect Pipe Conveying Pulsating Fluid

2020 ◽  
Vol 12 (06) ◽  
pp. 2050064
Author(s):  
Qian Li ◽  
Wei Liu ◽  
Kuan Lu ◽  
Zhufeng Yue
Keyword(s):  
Flow Velocity ◽  
Pitchfork Bifurcation ◽  
High Energy ◽  
Low Energy ◽  
Pulsation Frequency ◽  
Chaotic Motions ◽  
Integration Algorithm ◽  
Dynamic Behaviors ◽  
Geometric Imperfection ◽  
Energy Resonance

In this paper, the novel model of fluid-conveying imperfect pipe supported at both ends is established by considering the geometric imperfection and the geometric nonlinearity induced by mid-plane stretching. The integral-partial differential equation is discretized by the Galerkin method and solved by a fourth-order Runge–Kutta integration algorithm. Compared with the supercritical pitchfork bifurcation of the perfect pipe conveying fluid, the results show that the cusp bifurcation occurs in the imperfect pipe when increasing the flow velocity. Excellent agreement is observed between the numerical results and the analytical results. The two stable asymmetry bifurcation branches bring interesting phenomena in the post-buckling state. The global nonlinear dynamic behaviors of the imperfect pipe are studied by establishing the bifurcation diagrams. The influence of the geometric imperfection amplitude on the nonlinear response is leading to cusp bifurcation comparing with pitchfork bifurcation of the perfect pipe. When pulsation frequency is set as the bifurcation parameter, there are clear nonresonance ranges, low energy resonance ranges and high energy resonance ranges. In the high energy resonance ranges, the first mode vibration coexisting with the sub-harmonic resonance and combination resonance occurs. As the mean flow velocity and pulsation amplitude are set as bifurcation parameters, the vibration of the imperfect pipe becomes more and more complicated. The vibration exhibits far richer dynamic behaviors including periodic, multi-periodic, quasi-periodic, and chaotic motions. The viscoelastic damping can effectively suppress the vibration response and transfer the high energy resonance to the low energy resonance state. The improved model and corresponding results provide useful information for further studying the dynamic behaviors of fluid-conveying pipe with geometric imperfections.

Cluster structure of a low-energy resonance in tetraneutron

2008 ◽  
Vol 71 (2) ◽  
pp. 209-214 ◽  
Author(s):  
Yu. A. Lashko ◽  
G. F. Filippov
Keyword(s):  
Cluster Structure ◽  
Low Energy ◽  
Energy Resonance

DIRECT MEASUREMENTS OF THE ASTROPHYSICAL (α, n) AND (p, n) REACTIONS BY USING LOW-ENERGY LIGHT NEUTRON-RICH RNB

2004 ◽  
Author(s):  
HIRONOBU ISHIYAMA ◽  
HIROARI MIYATAKE ◽  
MASA-HIKO TANAKA ◽  
YUTAKA WATANABE ◽  
NOBUHARU YOSHIKAWA ◽  
...  
Keyword(s):  
Low Energy ◽  
Direct Measurements

The effects on stellar evolution of a low energy resonance in the 3He + 3He reaction

2001 ◽  
Vol 688 (1-2) ◽  
pp. 572-574 ◽  
Author(s):  
P.G. Prada Moroni ◽  
S. Zavatarelli
Keyword(s):  
Stellar Evolution ◽  
Low Energy ◽  
Energy Resonance

Direct Measurements of Self-Sputtering, Swelling, and Deposition Effects of N-Type Low-Energy Ion Implantations

2009 ◽  
Vol 37 (10) ◽  
pp. 2082-2089 ◽  
Author(s):  
Shu Qin ◽  
Kent Zhuang ◽  
Y.J. Hu ◽  
A. McTeer ◽  
Shifeng Lu
Keyword(s):  
Low Energy ◽  
Direct Measurements

THE STRUCTURAL AND VIBRATIONAL PROPERTIES OF C60 ADSORBED ON THE GRAPHITE(0001) SURFACE

1996 ◽  
Vol 03 (01) ◽  
pp. 937-942 ◽  
Author(s):  
M.R.C. HUNT ◽  
R.E. PALMER
Keyword(s):  
Inelastic Scattering ◽  
Cross Section ◽  
Vibrational Spectra ◽  
Electron Attachment ◽  
Low Energy ◽  
Vibrational Properties ◽  
Energy Resonance ◽  
Scattering Cross ◽  
Attachment Cross Section ◽  
Monolayer Coverage

The exciting opportunities promised by the unique properties of C60 can only be fully exploited if the growth and properties of this material can be understood. To this end we have carried out a study of the structural and vibrational properties of C60 adsorbed on the graphite(0001) surface. We observed a novel high-order periodicity at monolayer coverages which indicates that even the weak corrugation potential of the surface can perturb the geometry of the overlayer. Vibrational spectra show a low-energy resonance in the inelastic scattering cross section which we correlate with a resonance feature observed in the electron attachment cross section of C60. The lack of a measurable perturbation in the resonance upon going from multilayer to monolayer coverage indicates that a weak physisorption bond exists between the molecules and the surface.

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