GAMMA PB --> P X
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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.


MEASUREMENT OF THE POLARIZATION OF CUMULATIVE PROTONS IN gamma A ---> p X REACTION

Avakian, R.O. ; Avakian, E.O. ; Avetisian, A.E. ; et al.
Yad.Fiz. 42 (1985) 667-670, 1985.
Inspire Record 210380 DOI 10.17182/hepdata.17606

None

1 data table
Table 1

Axis error includes +- 7/7 contribution.


Angular Dependence of the Yield of Cumulative Protons Produced in $\gamma$ a Interactions at $e (\gamma$) Max = 4.5-{GeV}

Alanakian, K.V. ; Amarian, M.D. ; Demirchyan, R.A. ; et al.
Sov.J.Nucl.Phys. 37 (1983) 385, 1983.
Inspire Record 180824 DOI 10.17182/hepdata.17713

None

1 data table
Table 1

No description provided.


Energy dependence of the parameters $B$ and $C$ of the invariant cross section $f=C$exp(-$Bp^{2}$) for production of cumulative protons in the reaction $\gamma A \rightarrow pX$ in the nuclei $^{12}$C, $^{64}$Cu, and $^{207}$Pb

Avakyan, R.O. ; Avetisyan, A.É. ; Akopov, N.Z. ; et al.
Sov.J.Nucl.Phys. 33 (1981) 192-194, 1981.
Inspire Record 1392858 DOI 10.17182/hepdata.17815

None

3 data tables
Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.


Polarization of cumulative protons in the reaction gamma A --> p X.

Avakyan, R.O. ; Avakian, E.O. ; Avdalyan, G.A. ; et al.
Sov.J.Nucl.Phys. 51 (1990) 999-1000, 1990.
Inspire Record 306076 DOI 10.17182/hepdata.17310

None

3 data tables
Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.


Excitation Function of Photoproduction of Cumulative Protons on Nuclei

Alanakian, K.V. ; Amarian, M.D. ; Demirchyan, R.A. ; et al.
EFI-456-63-80-YEREVAN, 1980.
Inspire Record 159970 DOI 10.17182/hepdata.18446

None

2 data tables
Table 1

No description provided.

Table 2

DATA WERE OBTAINED BY SUBTRACTION METHOD. TO OBTAIN NORMALIIZED INVARIANT CROSS SECTION DATA FROM PR D8, 226 WERE USED.


A-DEPENDENCE OF CUMULATIVE PHOTOPROTONS

Alanakian, K.V. ; Amarian, M.D. ; Demirchyan, R.A. ; et al.
EFI-471-14-81-YEREVAN, 1981.
Inspire Record 167330 DOI 10.17182/hepdata.18454

None

3 data tables
Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.


On the Angular Dependence of Photoprotons From Nuclei Irradiated by $\gamma$ Quanta With Maximum Energy 4.5-{GeV}

Alanakian, K.V. ; Amarian, M.Dzh. ; Demirchyan, R.A. ; et al.
Nucl.Phys.A 367 (1981) 429, 1981.
Inspire Record 147184 DOI 10.17182/hepdata.18468

The angular dependences of proton photoproduction from the nuclei 12 C, 63 Cu and 208 Pb irradiated by bremsstrahlung γ-quanta with maximum energy 4.5 GeV, both in the cumulative region (i.e. in the kinematical region in which the production of protons in the collision of γ-quanta of the given energy with the quasi-free nuclear nucleon is forbidden) and in the non-cumulative region, are investigated. The experimental data obtained are compared with the results of theoretical calculations of cumulative proton photoproduction according to the following models: the “quasi-two-body” scaling model, the low-nucleon correlation model, the fluctuon model and the cluster model.

43 data tables
Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

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