19F(α,n) thick target yield from 3.5 to 10.0 MeV

Target and projectile K x-ray production by 100, 160, and 200 MeV Nb collisions with thick solid targets

2014 Target and projectile K x-ray cross-sections produced in collisions of Nb projectiles with a series of targets (Zt = 6 68) are reported for energies of 100, 160 and 200 MeV. Various K-vacancy production theories were tested over this broad range including electron promotion with vacancy sharing (molecular model), direct excitation (ECPSSR theory), modified binary encounter approximation (B...

Fragmentation in Proton-Nucleus Reactions from 100 to 1400 MeV

Design of 100 Mev Proton Beam Irradiation Facility for the Pefp 100 Mev Linac *

The Proton Engineering Frontier Project (PEFP) will install a 100-MeV proton linear accelerator at Gyeong-ju site. For the beam commissioning of 100 MeV proton linac, the two target rooms (TR 103, TR 23) will be prepared as a starter among 10 target room. To design the irradiation equipment in TR 103, we have investigated general propagation shape and spatial distribution of proton beam, when 1...

The FLASH Thick Target Experiment: Direct Measurement of Air Fluorescence Yield in Electromagnetic Showers

A key assumption in the reconstruction of extensive air showers using the air fluorescence technique is the hypothesis that fluorescence is proportional to energy deposition at all depths in the shower. This ansatz, along with the supposition that particle distribution and energy loss can be well modeled by modern shower simulation software, must be thoroughly verified in order to validate the ...

Retrieving Nuclear Information from Protons Propagating through a Thick Target

The multiple scattering of high-energy particles in a thick target is formulated in an impact parameter representation. A formalism similar but not identical to that of Molière is obtained. We show that calculations of particle beam broadening due to multiple Coulomb scattering alone can be given in closed form. The focus of this study is on whether or not the broadening of the Coulomb angular ...