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We present results for the photoproduction of inclusive prompt photons and for prompt photons accompanied by jets, measured with the ZEUS detector at HERA. Cross sections as a function of pseudorapidity and transverse energy are presented…

High Energy Physics - Experiment · Physics 2009-10-31 Sung Won Lee

The $\gamma$-process in core-collapse and/or type Ia supernova explosions is thought to explain the origin of the majority of the so-called $p$ nuclei (the 35 proton-rich isotopes between Se and Hg). Reaction rates for $\gamma$-process…

Nuclear Experiment · Physics 2015-03-09 G. G Kiss , T. Szücs , T. Rauscher , Zs Török , L. Csedreki , Zs Fülöp , Gy Gyürky , Z. Halász

Radiative thermal neutron capture cross sections for nuclei participating in s-process and p-process nucleosynthesis in and around $N=50$ closed neutron shell have been calculated in statistical semi-microscopic Hauser-Feshbach approach for…

Nuclear Theory · Physics 2018-05-29 Saumi Dutta , G. Gangopadhyay , Abhijit Bhattacharyya

The production of prompt photons is measured in the photoproduction regime of electron-proton scattering at HERA. The analysis is based on a data sample corresponding to a total integrated luminosity of 340 pb^-1 collected by the H1…

High Energy Physics - Experiment · Physics 2012-08-27 The H1 Collaboration

The photo nuclear reaction cross section of $^{61}$Ni($\gamma$,xp) reaction have been measured by employing surrogate reaction technique. This indirect method is used for the first time to obtain the cross section of photo nuclear reaction.…

Cross sections for the 168Yb(alpha,gamma)172Hf and 168Yb(alpha,n)171$Hf reactions were measured by means of the activation method using alpha particles with energies between 12.9 MeV and 15.1 MeV. The spectroscopy of the gamma rays emitted…

Nuclear Experiment · Physics 2013-10-08 L. Netterdon , P. Demetriou , J. Endres , U. Giesen , G. G. Kiss , A. Sauerwein , T. Szücs , K. O. Zell , A. Zilges

The aim of this work is to provide a precise and accurate measurement of the 238U(n,g) reaction cross section in the energy region from 1 eV to 700 keV. This reaction is of fundamental importance for the design calculations of nuclear…

Nuclear Experiment · Physics 2017-03-15 TOF Collaboration , F. Mingrone , C. Massimi , G. Vannini , N. Colonna , F. Gunsing , P. Žugec , S. Altstadt , J. Andrzejewski , L. Audouin , M. Barbagallo , V. Bécares , F. Bečvář , F. Belloni , E. Berthoumieux , J. Billowes , D. Bosnar , M. Brugger , M. Calviani , F. Calviño , D. Cano-Ott , C. Carrapiço , F. Cerutti , E. Chiaveri , M. Chin , G. Cortés , M. A. Cortés-Giraldo , M. Diakaki , C. Domingo-Pardo , I. Duran , R. Dressler , C. Eleftheriadis , A. Ferrari , K. Fraval , S. Ganesan , A. R. García , G. Giubrone , I. F. Gonçalves , E. González-Romero , E. Griesmayer , C. Guerrero , A. Hernández-Prieto , D. G. Jenkins , E. Jericha , Y. Kadi , F. Käppeler , D. Karadimos , N. Kivel , P. Koehler , M. Kokkoris , 1 M. Krtička , J. Kroll , C. Lampoudis , C. Langer , E. Leal-Cidoncha , C. Lederer , H. Leeb , L. S. Leong , S. Lo Meo , R. Losito , A. Mallick , A. Manousos , J. Marganiec , T. Martínez , P. F. Mastinu , M. Mastromarco , E. Mendoza , A. Mengoni , P. M. Milazzo , M. Mirea , W. Mondalaers , C. Paradela , A. Pavlik , J. Perkowski , A. Plompen , J. Praena , J. M. Quesada , T. Rauscher , R. Reifarth , A. Riego , M. S. Robles , C. Rubbia , M. Sabaté-Gilarte , R. Sarmento , A. Saxena , P. Schillebeeckx , S. Schmidt , D. Schumann , G. Tagliente , J. L. Tain , D. Tarrío , L. Tassan-Got , A. Tsinganis , S. Valenta , V. Variale , P. Vaz , A. Ventura , M. J. Vermeulen , V. Vlachoudis , R. Vlastou , A. Wallner , T. Ware , M. Weigand , C. Weiß , T. Wright

The differential cross sections of the forward coherent $\omega$ and $\phi$ mesons photoproduction from nuclei have been calculated using the Glauber model for the nuclear reaction. The measured cross section of the elementary reaction,…

Nuclear Theory · Physics 2021-11-02 Swapan Das

During therapeutic treatment with heavier ions like carbon, the beam undergoes nuclear fragmentation and secondary light charged particles, in particular protons and alpha particles, are produced. To estimate the dose deposited into the…

Photoneutron emission cross sections were measured for $^{13}$C below $2n$ threshold using quasi-monochromatic $\gamma$-ray beams produced in laser Compton-scattering at the NewSUBARU synchrotron radiation facility. The data show fine…

Nuclear Experiment · Physics 2023-03-09 H. Utsunomiya , S. Goriely , M. Kimura , N. Shimizu , Y. Utsuno , G. M. Tveten , T. Renstrøm , T. Ari-izumi , S. Miyamoto

The cross sections for inelastic photoproduction of J/psi and psi^prime mesons have been measured in ep collisions with the ZEUS detector at HERA, using an integrated luminosity of 468 pb-1 collected in the period 1996--2007. The psi^prime…

High Energy Physics - Experiment · Physics 2012-12-21 ZEUS Collaboration

The measured and evaluated excitation functions are fundamental quantities that affect the accuracy of all calculations in nuclear applications. Some cross sections, such as 14N(n,p)14C, have added value for special applications, as these…

The 197Au(gamma,n) reaction is used as an activation standard for photodisintegration studies on astrophysically relevant nuclei. At the bremsstrahlung facility of the superconducting electron accelerator ELBE (Electron Linear accelerator…

Motivated by the renewed interest in the surrogate nuclear reactions approach, an indirect method for determining compound-nuclear reaction cross sections, the prospects for determining (n, gamma) cross sections for deformed rare-earth and…

Nuclear Theory · Physics 2010-04-06 Jutta E. Escher , Frank S. Dietrich

A new method is employed to measure the neutral current cross section up to Bjorken-x values of one with the ZEUS detector at HERA using an integrated luminosity of 65.1 pb-1 for e+p collisions and 16.7 pb-1 for e-p collisions at…

High Energy Physics - Experiment · Physics 2012-08-27 ZEUS Collaboration

Uncertainties in adopted models of particle+nucleus optical-model potentials directly influence the accuracy in the theoretical predictions of reaction rates as they are needed for reaction-network calculations in, for instance,…

Differential cross sections for dijet photoproduction in association with a leading neutron using the reaction e^+ + p --> e^+ + n + jet + jet + X_r have been measured with the ZEUS detector at HERA using an integrated luminosity of 6.4…

High Energy Physics - Experiment · Physics 2008-11-26 ZEUS Collaboration , J. Breitweg

We have measured the differential cross section for the $\gamma$$^3$He$\rightarrow \pi^+ t$ reaction. This reaction was studied using the CEBAF Large Acceptance Spectrometer (CLAS) at Jefferson Lab. Real photons produced with the Hall-B…

Nuclear Experiment · Physics 2011-03-22 Rakhsha Nasseripour , Barry Berman , the CLAS Collaboration

Background: Neutron-induced reactions are a significant concern for experiments that require extremely low levels of radioactive backgrounds. Measurements of gamma-ray production cross sections over a wide energy range will help to predict…

Proton capture on $^{19,20}$O nuclei is measured in inverse kinematics with the active target detector MuSIC@Indiana using CH$_4$ as the target gas. Rejection of unreacted and inelastically scattered beam, along with transfer and fusion on…

Nuclear Experiment · Physics 2026-05-21 Rohit Kumar , H. Desilets , R. T. deSouza