OpenAccess

CuAl8 alloy finds applications in industrial components, where a good anti-corrosion and anti-wearing propertiesare required. The alloy has a medium strength and a good toughness with an elongation to fracture at roomtemperature of about 40%. [...]

We present a measurement of the Cabibbo-Kobayashi-Maskawa unitarity triangle angle ϕ$_{3}$ (also known as γ) using a model-independent Dalitz plot analysis of B$^{+}$ → D ($ {K}_S^0 $h$^{+}$h$^{−}$)h$^{+}$, where D is either a D$^{0}$ or $ \overline{D} ^{0}$ meson and h is either a π or K. This is the first measurement that simultaneously uses Belle and Belle II data, combining samples corresponding to integrated luminosities of 711 fb$^{−1}$ and 128 fb$^{−1}$, respectively [...]

We performed an experiment under long-term microgravity conditions aboard the International Space Station (ISS) to obtain information on the energetics and experimental constraints required for the formation of chondrules in the solar nebula by ’nebular lightning’. As a simplified model system, we exposed porous forsterite (Mg$_2$SiO$_4$) dust particles to high-energetic arc discharges [...]

Accurate simulation of physical processes is crucial for the success of modern particle physics. However, simulating the development and interaction of particle showers with calorimeter detectors is a time consuming process and drives the computing needs of large experiments at the LHC and future colliders. [...]

Die Gruppe L ist eine forschungsnahe Infrastrukturgruppe für alle Bereiche bei DESY. Seit über 60 Jahren sorgen wir für die Literatur- und Informationsversorgung bei DESY und die Sichtbarkeit des generierten Wissens. [...]

In the Universe matter outside of stars and compact objects is mostly composed of collisionless plasma. The interaction of a supersonic plasma flow with an obstacle results in collisionless shocks that are often associated with intense nonthermal radiation and the production of cosmic ray particles. [...]

The random nature of self-amplified spontaneous emission (SASE) is a well-known challenge for x-ray core level spectroscopy at SASE free-electron lasers (FELs). Especially in time-resolved experiments that require a combination of good temporal and spectral resolution the jitter and drifts in the spectral characteristics, relative arrival time as well as power fluctuations can smear out spectral-temporal features. [...]

Electron photoinjectors provide high-brightness electron beams to numerous research applications in physics, chemistry, material, and life sciences. Semiconductor photocathodes are widely used here, as they enable the production of low-emittance beams with variable charge at high repetition rates. [...]

A three-cell 1.3 GHz, Normal Conducting (NC) buncher is designed for a possible future upgrade of the European X-ray Free Electron Laser (Eu-XFEL) to operate in a continuous-wave (CW)/ long pulse (LP) mode. The RF geometry of the buncher is optimized for high shunt impedance, large mode separation as well as multipacting free in the operation range. [...]

We report on the soft x-ray absorption spectroscopy investigation of thin film capacitors using a modified total electron yield detection mode. This mode utilizes two ammeters instead of one as commonly employed in the classical total electron yield scheme to measure photocurrents of devices under soft x-ray irradiation [...]