{
  "id": "nucl-th/9604001",
  "version": "v1",
  "published": "1996-04-02T07:50:37.000Z",
  "updated": "1996-04-02T07:50:37.000Z",
  "title": "Angular and energy dependence of $(e,e^{\\prime})$ cross sections for orbital 1$^+$ excitations",
  "authors": [
    "R. Nojarov",
    "Amand Faessler",
    "M. Dingfelder"
  ],
  "comment": "Latex, 28 pages, 12 postscript figures included using uufiles",
  "journal": "Nucl. Phys. A 598 (1996) 82",
  "doi": "10.1016/0375-9474(95)00499-8",
  "categories": [
    "nucl-th"
  ],
  "abstract": "The main features of the $(e,e^{\\prime})$ cross sections of low-lying orbital excitations with $K^{\\pi} = 1^+$ in heavy deformed nuclei are studied in RPA on the example of $^{156}$Gd. The dependence of the DWBA E2 and M1 cross sections on the scattering angle $0^{\\circ} < \\theta < 180 ^{\\circ}$ and incident electron energy $E_i < 210$ MeV is analyzed in PWBA. The cross section is larger for M1 than for E2 transitions at any angle if $E_i < 30$ MeV. The longitudinal (Coulomb) C2 excitation dominates the E2 response for $5^{\\circ} < \\theta < 170 ^{\\circ}$. Only transverse M1 and E2 excitations compete for $\\theta > 175 ^{\\circ}$ and the former one is dominant for $q < 1.2$ fm$^{-1}$. The M1 response is almost purely orbital up to $q = 1.4$ fm$^{-1}$ even in backward scattering. Qualitative PWBA estimates based on the $q$-dependence of the form factors alone are not able to predict some important features of the $(e,e^{\\prime})$ cross sections stemming from the strong magnetic and orbital character of the studied 1$^+$ excitations. The expectation for M1 over E2 dominance in backward scattering should not be extended to higher momentum transfers and incident energies.",
  "revisions": [
    {
      "version": "v1",
      "updated": "1996-04-02T07:50:37.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "energy dependence",
      "incident electron energy",
      "e2 excitations compete",
      "higher momentum transfers",
      "c2 excitation dominates"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "Elsevier",
      "journal": "Nucl. Phys. A"
    },
    "note": {
      "typesetting": "LaTeX",
      "pages": 28,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 417310
    }
  }
}