Dennis Medenwaldt of Minot: Germany, World War II

North Dakota Prisoner of War Report by Dennis Medenwaldt (1922-2010) of Minot. Medenwaldt was a POW of Germany during the Second World War. 20 page

Hard Polarized Photon Emission in Single Crystals by High Energy Electrons for Planar Crystal Orientations

The radiation emission spectra of polarized photons emitted from charge particle in single crystal are obtained in semiclassical theory in Baer-Katkov-Strakhovenko approximation for planar crystal orientation. The range of applicability of this approximation is estimated by comparing the results with calculations in exact semiclassical theory. Optimal crystal orientations for producing unpolarized and polarized photon beams are also founded.Comment: 10 pages, 5 figures, (wpapfig,epsfig

Exploring the Dilemma of Innocent Defendants in the Plea Bargaining System

This study investigates the challenges faced by innocent defendants in the plea bargaining system. The dilemma arises from the choice between a risky trial and an immediate conviction for a reduced charge. The research, conducted with fifty-six undergraduate students, the rationality of innocent defendants, the influence of jail threats, socioeconomic status, and gender differences. Using hypothetical scenarios, participants review documents related to a fictitious charge, and ANOVA as well as chi-square statistical analyses are employed to assess the impact of various factors on plea decisions. Surprisingly, the presence of jail time did not significantly influence the likelihood of innocent defendants accepting guilty pleas. However, those who chose guilty pleas perceived their decisions as rational. Socioeconomic status and gender did not significantly affect plea decisions in this study. While the sample\u27s limitations are acknowledged, the research highlights the consistent occurrence of false guilty pleas, emphasizing the need for further exploration with a more diverse sample. The study suggests potential significance in socioeconomic status with a larger sample and encourages future research to consider psychological factors, quasi-experimental designs with real defendants, and the role of attorneys in the plea bargaining process. Despite inconsistencies, the research underscores the importance of understanding the complex factors in the plea bargaining system within the criminal justice system

Radiation of photons in process of charge particle volume reflection in bent single crystal

New type of radiation in crystals is predicted and investigated in computer simulation. It is shown that process of volume reflection of electrons and positrons in bent crystals is accomplished with high-power radiation of photons. Volume reflection radiation has intensity comparable with known channeling radiation, but it is less sensitive to entrance angle and sign of charge of a particle. Simulated spectra of radiation power are presented for 10 GeV and 200GeV particles.Comment: Latex, 8 pages, 4 fig

A perspective on biological x-ray and electron microscopy

Abstract. We consider image contrast for electron microscopy of thick hydrated biological specimens, allowing for the use of phase contrast and energy filtering. This allows us to gain perspective on the relative roles of electron and soft X-ray microscopes. Radiation dose is found to depend strongly on ice thickness, with electrons offering lower dose if the ice thickness is less than about 500 nm, and x rays offering lower dose for thicker ice layers

Measurement of pair-production by high energy photons in an aligned tungsten crystal

A new measurement has been made of the rate of pair production in a 3.2 mm thick tungsten crystal, exposed to photons with energies in the range 10 to 150 GeV, for angles of incidence up to 10 mrad from the crystal axis. A strong enhancement of the pair-production rate is observed when the beam is aligned along the crystal axis, as compared to a random orientation. This effect can be exploited in the NA48 CP- violation experiment by using a thin crystal rather than an amorphous material to convert photons, thus minimising the scattering of kaons in the converter

Antiproton stopping power in hydrogen below 120 keV and the Barkas effect

The simultaneous measurement of the spatial coordinates and times of p¯s annihilating at rest in a H2 target at very low density ρ (ρ/ρ0<10-2, ρ0 being the STP density) gives the possibility of evaluating the behavior of the p¯ stopping power in H2 at low energies (below 120 keV). It is different from that of protons (the Barkas effect). Moreover, it is shown that a rise at low-energy values (≲1 keV) is needed to agree with experimental data

Anti-truancy strategies

Color poster with text, chart, and image