HEPData Search

Showing 4 of 4 results

Photon induced emission of pions and protons from various nuclei in the DELTA region

Arends, J. ; Detemple, P. ; Floss, N. ; et al.

Nucl.Phys.A 526 (1991) 479-494, 1991.

Inspire Record 297759 DOI 10.17182/hepdata.36762

Double differential cross sections for the photon induced emission of π − , π + and protons from Be, C, O, Ti, and Pb have been measured in the photon energy range k = 220–450 MeV using the tagged photon beam of the Bonn 500 MeV synchrotron. The hadron detector consists of a magnetic spectrometer and a large acceptance scintillation counter array. For Be, the single-arm energy distributions show clear structures from quasi-free pion production and quasi-deuteron photodisintegration. These structures disappear with increasing target size. The dependence of the differential cross section on the nuclear size S at Θ lab = 52° can be described by the power law d σ/ d Ω ∞ S α , where S is the number of protons or neutrons, respectively. The exponent is α π ≈ 0.6 for π − and π + and α p ≈ 1.15 for protons. Data for pn, pp, and pπ coincidences are presented. The results are compared to intranuclear cascade codes (PICA and PIKI) and to microscopic calculations.

3 data tables

Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.