Bath Cryostat UHV SPM - Sigma Surface Science GmbH
... Vertical Magnetic Field: B�= ±5T Optical Access ...
... Vertical Magnetic Field: B�= ±5T Optical Access ...
COMPOSITE PLASTER CEMENT-BASED ELECTROMAGNETIC WAVE ABSORBER Johann Christiaan Pretorius by
... the 2 GHz to 12 GHz frequency range. Mobile and wireless communication systems use frequencies from 800 MHz upwards. The determination of characteristics such as reflection loss, absorption, attenuation and shielding effectiveness are crucial in the evaluation and development of these materials for ...
... the 2 GHz to 12 GHz frequency range. Mobile and wireless communication systems use frequencies from 800 MHz upwards. The determination of characteristics such as reflection loss, absorption, attenuation and shielding effectiveness are crucial in the evaluation and development of these materials for ...
Collisionless driven reconnection in an open system Ritoku Horiuchi , Wenbing Pei
... Magnetic reconnection is often discussed with steady models. On the other hand, long time scale MHD simulations (Kitabata et al., 1996; Amo et al., 1995) have demonstrated that magnetic reconnection takes place intermittently when there exists a constant energy supply from the exterior region. Which ...
... Magnetic reconnection is often discussed with steady models. On the other hand, long time scale MHD simulations (Kitabata et al., 1996; Amo et al., 1995) have demonstrated that magnetic reconnection takes place intermittently when there exists a constant energy supply from the exterior region. Which ...
Can a Fast-Mode EUV Wave Generate a Stationary Front?
... that Nitta et al. (2013) focused on the fastest moving EUV wave and ignored any slowly moving waves behind in each event of their sample. Therefore, in our understanding, most of the EUV waves in their paper correspond to the fast-mode wave/shock wave, rather than the classical diffuse “EIT waves”. ...
... that Nitta et al. (2013) focused on the fastest moving EUV wave and ignored any slowly moving waves behind in each event of their sample. Therefore, in our understanding, most of the EUV waves in their paper correspond to the fast-mode wave/shock wave, rather than the classical diffuse “EIT waves”. ...
Further VLBA Observations of SiO Masers toward Mira
... field direction and circular polarization indicating a magnetic field strength of several Gauss. Recent work by Herpin et al. (2006) indicates an average magnetic field of 3.5 G in the SiO maser region of a large sample of evolved stars. Ordered magnetic fields were also found in the H2 O and OH mas ...
... field direction and circular polarization indicating a magnetic field strength of several Gauss. Recent work by Herpin et al. (2006) indicates an average magnetic field of 3.5 G in the SiO maser region of a large sample of evolved stars. Ordered magnetic fields were also found in the H2 O and OH mas ...
- Triangle Universities Nuclear Laboratory
... new experiment aiming at two orders of magnitude improvement (∼ 10−28 e·cm) over the current experimental upper limit has been proposed in the United States. In the experiment, the measurement cell will be made of dTPB-dPS coated acrylic and filled with superfluid 4 He at ∼300-500 mK. The measuremen ...
... new experiment aiming at two orders of magnitude improvement (∼ 10−28 e·cm) over the current experimental upper limit has been proposed in the United States. In the experiment, the measurement cell will be made of dTPB-dPS coated acrylic and filled with superfluid 4 He at ∼300-500 mK. The measuremen ...
1. Introduction - About the journal
... mechanical stress in the fiber coil and the linear birefringence rate is decreased. The temperature dependence of residual linear birefringence is also reduced [8]. The sensors with back light propagation can be constructed for the birefringence compensation. This approach exploits the non-reciproci ...
... mechanical stress in the fiber coil and the linear birefringence rate is decreased. The temperature dependence of residual linear birefringence is also reduced [8]. The sensors with back light propagation can be constructed for the birefringence compensation. This approach exploits the non-reciproci ...
Guidelines on the Calibration of Temperature Indicators
... very stable and well defined temperature. For example, a physical ice point, prepared according to the procedure proposed in “Techniques for approximating ITS-90”, will provide a stable temperature of 0 °C with a typical uncertainty of <10 mK. Alternatively, a large well-insulated copper block at am ...
... very stable and well defined temperature. For example, a physical ice point, prepared according to the procedure proposed in “Techniques for approximating ITS-90”, will provide a stable temperature of 0 °C with a typical uncertainty of <10 mK. Alternatively, a large well-insulated copper block at am ...
Three-dimensional head model simulation of transcranial magnetic
... this, many researchers have drawn the conclusion that fields normal to the cortex will be minimized in the human head and neurons are preferentially stimulated which run parallel to the cortical tissue interface [13], [24]–[28]. However, this prediction is the result of the simplified symmetrical ge ...
... this, many researchers have drawn the conclusion that fields normal to the cortex will be minimized in the human head and neurons are preferentially stimulated which run parallel to the cortical tissue interface [13], [24]–[28]. However, this prediction is the result of the simplified symmetrical ge ...
3. CURRENT ELECTRICITY
... 24. Define the terms electric energy and electric power. Give their units. Ans. Electric energy:-The total work done by the source of emf in maintaining an electric current in a circuit for a given time is called electric energy consumed in the circuit. Its SI unit is joule. Electric power:-The rate ...
... 24. Define the terms electric energy and electric power. Give their units. Ans. Electric energy:-The total work done by the source of emf in maintaining an electric current in a circuit for a given time is called electric energy consumed in the circuit. Its SI unit is joule. Electric power:-The rate ...
Weyl Metal States and Surface Fermi Arcs in Iridates
... time reversal and inversion symmetries. It can take any value (dynamic axion field) for magnetic topological insulators. In most known materials θ is small (10⁻³,in Cr2O3) Highly interesting to study for Pyrochlore Iridates! Here, due to inversion symmetry it still only can be 0 or p. ...
... time reversal and inversion symmetries. It can take any value (dynamic axion field) for magnetic topological insulators. In most known materials θ is small (10⁻³,in Cr2O3) Highly interesting to study for Pyrochlore Iridates! Here, due to inversion symmetry it still only can be 0 or p. ...
Cation order/disorder in lithium transition
... the Li–Ni–O system. Due to the difficult oxidation of Ni2+ to Ni3+ and the volatility of the lithium compounds, nonstoichiometric oxides with 0.005 < x < 0.2 are usually obtained [12–14]. Preparing compositions with x → 0 is very difficult, and an “ideal” stoichiometric LiNiO2 has not yet been achie ...
... the Li–Ni–O system. Due to the difficult oxidation of Ni2+ to Ni3+ and the volatility of the lithium compounds, nonstoichiometric oxides with 0.005 < x < 0.2 are usually obtained [12–14]. Preparing compositions with x → 0 is very difficult, and an “ideal” stoichiometric LiNiO2 has not yet been achie ...
Superconductivity
Superconductivity is a phenomenon of exactly zero electrical resistance and expulsion of magnetic fields occurring in certain materials when cooled below a characteristic critical temperature. It was discovered by Dutch physicist Heike Kamerlingh Onnes on April 8, 1911 in Leiden. Like ferromagnetism and atomic spectral lines, superconductivity is a quantum mechanical phenomenon. It is characterized by the Meissner effect, the complete ejection of magnetic field lines from the interior of the superconductor as it transitions into the superconducting state. The occurrence of the Meissner effect indicates that superconductivity cannot be understood simply as the idealization of perfect conductivity in classical physics.The electrical resistivity of a metallic conductor decreases gradually as temperature is lowered. In ordinary conductors, such as copper or silver, this decrease is limited by impurities and other defects. Even near absolute zero, a real sample of a normal conductor shows some resistance. In a superconductor, the resistance drops abruptly to zero when the material is cooled below its critical temperature. An electric current flowing through a loop of superconducting wire can persist indefinitely with no power source.In 1986, it was discovered that some cuprate-perovskite ceramic materials have a critical temperature above 90 K (−183 °C). Such a high transition temperature is theoretically impossible for a conventional superconductor, leading the materials to be termed high-temperature superconductors. Liquid nitrogen boils at 77 K, and superconduction at higher temperatures than this facilitates many experiments and applications that are less practical at lower temperatures.