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Wednesday, July 22, 2020 | History

2 edition of Experimental investigations of the proton and deuteron structure functions found in the catalog.

Experimental investigations of the proton and deuteron structure functions

Kjell Janson

Experimental investigations of the proton and deuteron structure functions

by Kjell Janson

  • 129 Want to read
  • 39 Currently reading

Published by Academia Upsaliensis, Distributor, Almqvist & Wiksell International in Uppsala, Stockholm, Sweden .
Written in English

    Subjects:
  • Particles (Nuclear physics),
  • Protons.,
  • Deuterons.,
  • Quark models.

  • Edition Notes

    StatementKjell Janson.
    SeriesActa Universitatis Upsaliensis., 32
    Classifications
    LC ClassificationsQC793.3.S8 J36 1991
    The Physical Object
    Pagination130 p. :
    Number of Pages130
    ID Numbers
    Open LibraryOL1191828M
    ISBN 109155427588
    LC Control Number94182948
    OCLC/WorldCa24181380

    Application rigorous two step method proton activation of. Abstract experimental excitation functions for proton induced reactions natural vanadium the mev energy range were measured with the activation method. Cafagnau for the totem collaboration infn sezione bari italy bismuth activation with quasimaxwellian neutrons uc kev. The experimental data reported in this work are the result of our earlier measurements on proton, deuteron and a-particle irradiations respectively [1] [2] [3]. The measured excitation functions.

    We compare our results with the available experimental data below E{sub x}=20 MeV. Excellent agreement is found when taking into account meson exchange currents, dipole and quadrupole contributions, and the full initial state interaction. A Precise measurement of the G(2) structure function of the proton and deuteron. Journal Article. Precision Spin Structure Functions for the Proton and Deuteron with CLAS. Angela Biselli for the CLAS Collaboration. Fairfield University, Fairfield, CT Abstract. An extensive experimental program to measure the spin structure of the nucleon has been carried out in in Hall B at Jefferson Lab with the CEBAF Large Acceptance Spectrometer.

    In our earlier systematic investigations of the excitation functions for production of 88 Zr and 88 Y by proton and deuteron irradiation of Mo, Nb, Zr and Y targets [2] the results for high energy. The proton spin puzzle, why the quark spin content of the proton is so small ∼ , concerns the collapse of the isoscalar spin sum structure function to near zero at this small x.


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Experimental investigations of the proton and deuteron structure functions by Kjell Janson Download PDF EPUB FB2

Get this from a library. Experimental investigations of the proton and deuteron structure functions. [Kjell Janson]. Experimental investigations of the proton and deuteron structure functions.

If you have a disability and are having trouble accessing information on this website or need materials in an alternate format, contact [email protected] for [email protected] for by: 4.

Measurements are reported of the proton and deuteron spin structure functionsgp 1 and gd 1 at beam energies of, and GeV, andg p 2 and g d 2 at a beam energy of GeV. The integrals p = R 1 0 g p 1 (x;Q2)dxand d =R 1 0 g d 1 (x;Q2)dxwere evaluated at xed Q2 =3(GeV/c)2 using the full data set to yield p = (stat:) (syst:) and d =.

47 Sc could be used in SPECT imaging and also suitable for targeted therapy of small tumors. The excitation functions for the production of 47 Sc and accompanying impurities via proton and deuteron bombardment of Calcium, Titanium and Vanadium targets were evaluated by three nuclear codes, ALICE, TALYS and EMPIRE.

Therefrom, integral yields of 47 Sc and also 46g Cited by: 1. Excitation functions forPt andg, g, g Ir radionuclide production were measured.

Theoretical thick target yields were estimated to be MBq/µA h and MBq/µA h via the Ir(p,3n) Pt reaction at – MeV and the Ir(d,4n) Pt reaction at – MeV, respectively. The feasibility of Pt production from an iridium.

First, the deuteron is a spin-1 hadron so that additional spin structure exists. This point is clarified in Refs.

12, 13, so that the interested reader may read these papers for the details. Experimental investigations of the proton and deuteron structure functions book, the deuteron structure functions are not simple summations of proton and neutron ones because of nuclear effects.

The experimental measurements of charged particle induced reactions are necessary for understanding the nuclear structure, nuclear excited state properties (Barker and Connor, ). The interaction of charged particle and in particularly proton induced reactions are more challenging as compared to neutron and photon induced reactions as it has.

We summarize the results of a recent global analysis of proton and deuteron F2 structure function world data performed over a large range of kinematics, including recent measurements done at JLab with the CLAS detector. From these data the lowest moments (n≤10) of the unpolarized structure functions are determined with good statistics and systematics.

Apart from the proton, the nucleus of the hydrogen atom, the deuteron, consisting of one proton and one neutron, is the simplest nucleus bound together by the nuclear force. As such it is a testing ground for various models of nuclear structure.

The deuteron was discovered inin time when no satisfactory theory of nucleus was available. considered R ≈ 0 in this region. All experimental investigations show also that Rp ≈Rd with high precision [8]. The calculation of the proton polarizability contribution to the Lamb shift of the hydrogen atom was carried out in [3] by means of (3).

The deuteron structure function Fd 2 was derived onthe basis ofnumerous experimental data. Electromagnetic structure of the deuteron 5 where Yℓm ℓ are the spherical harmonics normalized to unity on the unit sphere, z 0 = u and z 2 = ware the reduced Sand D-state wave functions, and the + distinguishes this from other (relativistic) components of the wave function to.

New measurements have been made of the proton and deuteron spin structure functions, g p 1 and g d 1, using deep‐inelastic scattering of longitudinally polarized electrons from polarized NH 3 and ND 3 targets.

The data span the kinematic range Abstract. Two recent experiments at SLAC are described, one on electron-proton elastic scattering out to Q 2 = (GeV/c) 2, and another on ° elastic scattering from the deuteron out to (GeV/c) proton data yield new values for the magnetic form factor G M p which are compared to predictions from perturbative QCD.

Preliminary results from the deuteron. Abstract: The muon-proton and muon-deuteron inclusive deep inelastic scattering cross sections were measured in the kinematic range   The experimental aspects and results of the recent SLAC E measurement of the deuteron spin structure function g d 1 are discussed.

These results are combined with the proton spin structure function, g p 1, obtained concurrently in the same experiment, to provide tests of the predictions of sum rules.

The results are found to be in excellent agreement with. Experimental excitation functions for deuteron induced reactions up to 40MeV on natural vanadium were measured with the activation method using a stacked foil irradiation technique.

Spin Structure of the Proton and Deuteron K. Griffioen College of William & Mary [email protected] Spin Structure at Long Distances Jefferson Lab Duality - structure functions averaged over resonances behave according to DIS systematics Global - all resonances Local - one resonance.

CiteSeerX - Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): The production of slow nucleons in semi-inclusive deep inelastic electron scattering off the deuteron is investigated in the region x> It is shown that within the spectator mechanism the semi-inclusive cross section exhibits a scaling property even at moderate values of Q 2 (∼ few (GeV/c) 2).

The reaction Be9(d,n)B10 was investigated in the deuteron energy range – keV. The γ-yield for keV photons of B10 was measured and the cross-sections at different energies were determined.

The Gamow penetration formula gave a good fit to the shape of the experimental cross-section curve. The reaction Be9(p,γ)B10 was investigated in the proton energy range.

Present experimental investigations of the nucleon’s internal spin structure, the theoretical interpretation of the different measurements, and the open questions and challenges for future investigation are discussed. Measurements of the proton and deuteron spin structure functions g(1) and g(2).

We are now in a position to consider the experimental data at the hadron level. Substituting Eqs., into Eq. gives the polarized structure of the proton and the neutron.

The polarized structure function of deuteron is obtained .Plots of the equilibrium constant Keq a) as a function of Ns at T= K and b) as a function of inverse temperature 1/T for Ns=8 on a semilog scale for the deuteron (•) and proton () .