A STUDY OF NUCLEON FORCES WITH REPULSIVE CORES: III. LOW ENERGY PROPERTIES OF THE LÉVY POTENTIAL

1957 ◽  
Vol 35 (4) ◽  
pp. 451-454 ◽  
Author(s):  
M. A. Preston ◽  
J. Shapiro
Keyword(s):  
Binding Energy ◽  
Singlet State ◽  
Scattering Length ◽  
Low Energy ◽  
Proton Scattering ◽  
Core Radius ◽  
Deuteron Binding Energy ◽  
Coupling Constant ◽  
Spin Dependence ◽  
The Core

An attempt has been made to select the core radius and coupling constant of the Lévy potential for the interaction of two nucleons in order to fit the binding energy of the deuteron and the singlet state neutron–proton scattering length. It was found that these two quantities cannot be fitted simultaneously. For any given choice of coupling constant, a somewhat larger core radius is required to fit the deuteron binding energy than is required for the scattering length. This spin dependence of the core radius does not preclude the possibility of a fit to the low energy data with the Lévy potential.

Spin Dependence in Low-Energy Neutron-Proton Scattering

1986 ◽  
Vol 57 (19) ◽  
pp. 2359-2362 ◽  
Author(s):  
J. Sromicki ◽  
D. Holslin ◽  
M. D. Barker ◽  
P. A. Quin ◽  
W. Haeberli
Keyword(s):  
Low Energy ◽  
Proton Scattering ◽  
Spin Dependence ◽  
Energy Neutron

A STUDY OF NUCLEON FORCES WITH REPULSIVE CORES: IV. CALCULATIONS OF THE SHAPE-DEPENDENT PARAMETERS IN NEUTRON–PROTON SCATTERING

1958 ◽  
Vol 36 (5) ◽  
pp. 579-584 ◽  
Author(s):  
R. L. Preston ◽  
M. A. Preston
Keyword(s):  
Phase Shift ◽  
Singlet State ◽  
Scattering Length ◽  
Effective Range ◽  
Repulsive Core ◽  
Triplet States ◽  
Proton Scattering ◽  
Dependent Parameter ◽  
Singlet And Triplet States ◽  
Experimental Values

The magnitudes of the coefficients P and Q in the phase-shift expansion k cot [Formula: see text] have been investigated in the case of repulsive-core NP interactions. For square, Gaussian, exponential, and Yukawa shapes, which fit experimental values of the scattering length and the effective range, the shape-dependent parameter P has been computed as a function of rc in both singlet and triplet states. Also, for square and Yukawa shapes, which fit the scattering length and effective range, Q has been computed in the singlet state.

scholarly journals Low-energy dipole modes in the heavy deformed nucleus154Sm via inelastic polarized proton scattering at 0°

2012 ◽  
Vol 38 ◽  
pp. 11001
Author(s):  
A. Krugmann ◽  
D. Martin ◽  
P. von Neumann-Cosel ◽  
N. Pietralla ◽  
I. Poltoratska ◽  
...  
Keyword(s):  
Low Energy ◽  
Proton Scattering ◽  
Polarized Proton

The binding energies of atomic nuclei III. Nuclear forces and the ground state of oxygen 16

1959 ◽  
Vol 253 (1273) ◽  
pp. 186-198 ◽  
Keyword(s):  
Binding Energy ◽  
Electron Scattering ◽  
Ground State ◽  
Binding Energies ◽  
Wave Functions ◽  
Unperturbed System ◽  
Core Radius ◽  
Nuclear Forces ◽  
Potential Core ◽  
Atomic Nuclei

The r. m. s. radius and the binding energy of oxygen 16 are calculated for several different internueleon potentials. These potentials all fit the low-energy data for two nucleons, they have hard cores of differing radii, and they include the Gammel-Thaler potential (core radius 0·4 fermi). The calculated r. m. s. radii range from 1·5 f for a potential with core radius 0·2 f to 2·0 f for a core radius 0·6 f. The value obtained from electron scattering experiments is 2·65 f. The calculated binding energies range from 256 MeV for a core radius 0·2 f to 118 MeV for core 0·5 f. The experimental value of binding energy is 127·3 MeV. The 25% discrepancy in the calculated r. m. s. radius may be due to the limitations of harmonic oscillator wave functions used in the unperturbed system.

scholarly journals Simulation of a convective loop for the NTED™ low energy house

2021 ◽  
Author(s):  
Ian Stahlbrand
Keyword(s):  
Heat Loss ◽  
Heat Pump ◽  
Software Package ◽  
Heat Recovery ◽  
Buffer Zone ◽  
Low Energy ◽  
Temperature Stratification ◽  
The Core ◽  
Living Space ◽  
House Design

The Nested Thermal Envelope Design (NTED™) is an innovative low energy house design that incorporates two thermal envelopes to create a core and perimeter zone. The perimeter acts as a thermal buffer zone, where heat loss from the core and solar gain in the perimeter is recovered to the core via an inter-zone heat pump. In order to optimize heat recovery from the perimeter and minimize temperature stratification, a complete loop is formed around the core living space, through which air may flow in a convective loop. A simplified convective loop was modelled with a commercial CFD software package. Simulations show the convective loop distributes solar gains and reduces temperature stratification in the perimeter. The location of the heat pump in the convective loop was found to affect the DOP by up to 21%.

Sulfamoyl nitrenes: singlet or triplet ground state?

2018 ◽  
Vol 54 (48) ◽  
pp. 6136-6139 ◽  
Author(s):  
Yan Lu ◽  
Hongmin Li ◽  
Manabu Abe ◽  
Didier Bégué ◽  
Huabin Wan ◽  
...  
Keyword(s):  
Triplet State ◽  
Ground State ◽  
Singlet State ◽  
Minimum Energy ◽  
Closed Shell ◽  
Low Energy ◽  
Energy Minimum ◽  
Triplet Ground State ◽  
Crossing Point

Two prototypical sulfamoyl nitrenes R2NS(O)2–N (R = H and Me) in the triplet state were generated via the closed-shell singlet state by passing a low-energy minimum energy crossing point (MECP).

Low-Energy Proton-Proton Scattering in Pionless Effective Theory

2008 ◽  
Vol 53 (9(2)) ◽  
pp. 1152-1157
Author(s):  
J. W. Shin ◽  
S. Ando ◽  
C. H. Hyun ◽  
S. W. Hong
Keyword(s):  
Low Energy ◽  
Effective Theory ◽  
Proton Scattering ◽  
Proton Proton ◽  
Energy Proton
Sign in / Sign up

Export Citation Format

Share Document