scholarly journals Poincaré invariant three-body scattering at intermediate energies

2008 ◽  
Vol 78 (2) ◽  
Author(s):  
T. Lin ◽  
Ch. Elster ◽  
W. N. Polyzou ◽  
H. Witała ◽  
W. Glöckle
Keyword(s):  
Intermediate Energies ◽  
Three Body

Three-body dynamics in the reactionH(e,2e)H + at intermediate energies

1989 ◽  
Vol 11 (3) ◽  
pp. 257-258 ◽  
Author(s):  
M. Brauner ◽  
J. S. Briggs ◽  
H. Klar
Keyword(s):  
Intermediate Energies ◽  
Body Dynamics ◽  
Three Body

scholarly journals Linking structure and dynamics with two-neutron halos

2021 ◽  
Vol 252 ◽  
pp. 04005
Author(s):  
Jesús Casal ◽  
Mario Gómez-Ramos ◽  
Antonio M. Moro
Keyword(s):  
Relative Energy ◽  
Theoretical Description ◽  
Halo Nuclei ◽  
Opening Angle ◽  
Body Model ◽  
Structure And Dynamics ◽  
Intermediate Energies ◽  
Momentum Distributions ◽  
Three Body ◽  
Structure Properties

We present a theoretical description of (p, pn) reactions induced by two-neutron halo nuclei at intermediate energies. For this purpose, we use a reaction framework that incorporates a full three-body model for the projectile, and we focus on the cases of 11Li and 14Be. Our results provide a direct link between the structure properties of these nuclei and different reaction observables, such as relative-energy spectra or momentum distributions. We discuss also on the link between dineutron correlations and opening-angle distributions.

Relativistic three-body approach to NN scattering at intermediate energies

1986 ◽  
Vol 33 (6) ◽  
pp. 2105-2120 ◽  
Author(s):  
E. van Faassen ◽  
J. A. Tjon
Keyword(s):  
Intermediate Energies ◽  
Three Body

scholarly journals Three-body scattering at intermediate energies

2005 ◽  
Vol 72 (5) ◽  
Author(s):  
H. Liu ◽  
Ch. Elster ◽  
W. Glöckle
Keyword(s):  
Intermediate Energies ◽  
Three Body

Identical nuclei in coherent pion production at intermediate energies

2002 ◽  
Vol 80 (9) ◽  
pp. 941-950
Author(s):  
P A Deutchman
Keyword(s):  
Forward Direction ◽  
Intermediate Energy ◽  
Initial State ◽  
Energy Distributions ◽  
Final State ◽  
Intermediate Energies ◽  
Body State ◽  
Pion Energy ◽  
Three Body ◽  
First Time

The formalism for the calculation of constructive, coherent production of pions through the collision of intermediate-energy nuclei now includes for the first time the exchange symmetry due to identical nuclei both in the initial two-body state and in the final three-body state. Of the eight terms that contribute to the pion-energy distributions, four of the amplitudes are equal in pairs, effectively leaving four amplitudes with direct terms in the initial state and direct and exchange terms in the final state. Of these remaining amplitudes, the final-state exchange terms are negligible as far as the calculation is concerned. This holds for pion-energy distributions over the incident energies from 100 MeV/nucleon to 2 GeV/nucleon for pions fixed in the forward direction (θπ = 0°) and the projectile and target, respectively, fixed in the fore and aft directions. This work is also generalized to include schematic solutions for the cases of identical nuclei in the initial state only, identical nuclei in the final state only, and the case of no identical nuclei at all. PACS Nos.: 24.10Cn, 24.30Cz, 25.70-z, 25.80-e

scholarly journals Poincaré Invariant Three-Body Scattering at Intermediate Energies

2010 ◽  
Vol 3 ◽  
pp. 05005
Author(s):  
Ch. Elster ◽  
T. Lin ◽  
W.N. Polyzou ◽  
W. Glöckle
Keyword(s):  
Intermediate Energies ◽  
Three Body

Origins of the energy distribution structure in coherent pion production at intermediate energies

2001 ◽  
Vol 79 (8) ◽  
pp. 1055-1074 ◽  
Author(s):  
P A Deutchman
Keyword(s):  
Incident Energy ◽  
Giant Resonance ◽  
Intermediate Energy ◽  
Hole State ◽  
Energy Distributions ◽  
Intermediate Energies ◽  
Pion Energy ◽  
Three Body ◽  
Energy Dependent ◽  
First Time

New calculations have been done that now cover the intermediate energy range from 100 MeV/nucleon to 2.0 GeV/nucleon incident energy for the reaction 12C + 12C [Formula: see text] 12C + 12C (15.11 MeV) +π0, where constructive, coherent Δ-hole states are excited in either nucleus while the companion nucleus is excited to a coherent nucleon–hole state describing the spin–isospin, giant resonant state at 15.11 MeV. The Δ (1232 MeV) isobar then decays to a nucleon and pion. Theoretical pion energy distributions are calculated and, for the first time, results above 400 MeV/nucleon are shown. A theoretical basis for understanding how the shapes of the pion distributions change as a function of incident energy is described. The fundamental shape of the Δ-production amplitude as a function of momentum transfer is discussed and the effects of the energy-dependent nuclear width are examined. Furthermore, the connection between the origins of the pion distribution to the final pion shapes is made and the importance of the giant resonance in providing an important signature is pointed out. By pushing the calculations above 400 MeV/nucleon, it was discovered that sliding kinematics and kinematic turnarounds occur due to the two-to-three-body sequential nature of the reactions and these effects determine the final structure of the pion distributions at higher incident energies. PACS Nos.: 24.10Cn, 24.30Cz, 25.70-z, 25.80-e

scholarly journals Few-nucleon system dynamics studied via deuteron-deuteron collisions at 160 MeV

2020 ◽  
Author(s):  
Izabela Ciepał ◽  
Kazimierz Bodek ◽  
Nasser Kalantar Nayestanaki ◽  
Ghanshyambhai Khatri ◽  
Stanisław Kistryn ◽  
...  
Keyword(s):  
Cross Sections ◽  
Theoretical Calculations ◽  
Deuteron Beam ◽  
Proton Transfer Reaction ◽  
Nucleon Nucleon ◽  
P Wave ◽  
Nucleon Force ◽  
Nuclear Dynamics ◽  
Intermediate Energies ◽  
Three Body

Four nucleon scattering at intermediate energies provides unique opportunities to study effects of the two key ingredients of the nuclear dynamics, the nucleon-nucleon P-wave (NNP-wave) and the three-nucleon force (3NF). This is possible only with systematic and precise data, in conjunction with exact theoretical calculations. Using the BINA detector at KVI Groningen, the Netherlands, a rich set of differential cross section of the ^{2}2H(d,dp)n breakup reaction at 160 MeV deuteron beam energy has been measured. Besides the three-body breakup, also cross sections of the ^{2}2H(d, ^{3}3He)n proton transfer reaction have been obtained. The data are compared to the recent calculations for the three-cluster breakup.

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