Search results for "Nucleon-nucleon interaction"

showing 5 items of 5 documents

Halo-like structure in 7He nucleus

2020

A study of the neutron structure of the ground state of 7He has been performed by means of registration and analysis of the decay channels of the residual nuclei following absorption of stopped pions. In particular, the reaction 9Be (${\pi }_{}^{-},d$)X have been investigated where X denotes any system with five neutrons and two protons – the constituencies of a 7He nucleus. It was shown that the structure of 7He is determined by correlations of two neutrons in the states 6He (0+), 6He (2+) and one neutron in the shell p3/2. The 4He+3n structure is not manifested in the ground state of 7He. The obtained results are consistent with the known data on considerable mixture of configurations "6H…

Cluster stateNuclear TheoryNucleon-nucleon interactionsBerylliumheliumNuclear Experimentydinfysiikka
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Measurement of high energy resolution inelastic proton scattering at and close to zero degrees

2009

13 pages, 15 figures.-- Printed version published Jul 1, 2009.

Nuclear and High Energy PhysicsHigh energy resolutionM1 excitationForward scatterCyclotronMeasurement at 0 degreesTRANSITIONSInelastic scatteringDispersion matchingISOVECTORlaw.inventionSHELL NUCLEINuclear physicsNUCLEON-NUCLEON INTERACTIONlawBEAM LINEE1 Coulomb excitationFOCAL-PLANE POLARIMETERInstrumentationInelastic proton scatteringPolarization transfer coefficientsISOSCALARElastic scatteringPhysicsBackground subtractionPolarization transfer coefficientScatteringResolution (electron density)SPIN EXCITATIONSBeamlinePhysics::Accelerator PhysicsMeasurement at 0ºAtomic physicsSPECTROMETER GRAND RAIDENINTERMEDIATE ENERGIES
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Translationally invariant coupled cluster method in coordinate space for nuclei

2002

We study a formulation of the translationally invariant coupled cluster method in coordinate space for finite nuclei. The new formulation remedies convergence problems that plagued previous calculations in configuration space. The method is applied to light nuclei using semi-realistic central interactions.

PhysicsLight nucleusNuclear and High Energy Physics/dk/atira/pure/subjectarea/asjc/3100/3106Nuclear structureInvariant (physics)Physics and Astronomy(all)Coupled clusterClassical mechanics/dk/atira/pure/subjectarea/asjc/3100Quantum electrodynamicsNuclear binding energyConfiguration spaceCLOSED-SHELL NUCLEI; MODEL-CALCULATIONS; CBF THEORY; DEPENDENT CORRELATIONS; PAIR CORRELATIONS; FINITE SYSTEMS; GROUND-STATE; JASTROW; O-16; Nuclear binding energy; Nuclear model; Nuclear structure; Nucleon-nucleon potential (formulation of translationally invariant coupled cluster method in coordinate space for closed shell nuclei within 0p-shell with use of semi-realistic central nucleon-nucleon interactions)Coordinate spaceGround state
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Faddeev study of heavy baryon spectroscopy

2007

16 pages, 3 figures.-- PACS nrs.: 12.39.Jh, 12.39.Pn, 14.20.-c.-- ISI Article Identifier: 000246249100015.-- ArXiv pre-print available at: http://arxiv.org/abs/hep-ph/0703257

QuarkNuclear and High Energy PhysicsParticle physicsHigh Energy Physics::LatticeNuclear TheoryConstituent quarkFOS: Physical sciencesPosition and momentum spaceBottom quarkHyperfine interactionsHigh Energy Physics - Phenomenology (hep-ph)ChromodynamicsSymmetry breakingCharm (quantum number)Nuclear ExperimentPhysicsCharmed baryonsNonrelativistic quark modelsHigh Energy Physics::PhenomenologyFísicaQuantum numberFlip-flop modelBaryonHigh Energy Physics - PhenomenologyHigh Energy Physics::ExperimentNucleon-nucleon interactionBaryon spectra
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Superallowed α Decay to Doubly Magic 100Sn

2018

We report the first observation of the 108Xe→104Te→100Sn α-decay chain. The α emitters, 108Xe [Eα=4.4(2)  MeV, T1/2=58+106−23  μs] and 104Te [Eα=4.9(2)  MeV, T1/2<18  ns], decaying into doubly magic 100Sn were produced using a fusion-evaporation reaction 54Fe(58Ni,4n)108Xe, and identified with a recoil mass separator and an implantation-decay correlation technique. This is the first time α radioactivity has been observed to a heavy self-conjugate nucleus. A previous benchmark for study of this fundamental decay mode has been the decay of 212Po into doubly magic 208Pb. Enhanced proton-neutron interactions in the N=Z parent nuclei may result in superallowed α decays with reduced α-decay wi…

alpha decayTheoryofComputation_ANALYSISOFALGORITHMSANDPROBLEMCOMPLEXITYnucleon-nucleon interactionsydinfysiikkaradioaktiivisuus
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