In the framework of the research and development activities of the SPES project regarding the optimization of the radioactive beam production, a dedicated experimental study has been recently started in order to investigate the possibility of in-source ionization of germanium using a set of tunable dye lasers. Germanium is one of the beams to be accelerated by the SPES ISOL facility, which is u...

A fluctuation-free mercury arc lamp for the pumping of a cw alexandrite laser is reported. Thermal insulation of a cathode of the lamp permits 4-kW fully vaporized direct-current operation. Fluctuations owing to the pool of liquid mercury in conventional lamp tubes is completely avoided. A 17-W, cw alexandrite laser pumped by the newly developed lamp is described.

Uranium photoionization was observed in the afterglow of pulsed hollow cathode lamps illuminated by a dye laser tuned near the electronic transition around 591.5 nm ~L6 216 900 cm M 7!. The photoionization signal was used to monitor the time evolution of the ground state uranium vapor density in the cathode hole. Lifetimes over 1 ms were measured for the uranium vapor; that makes this device at...

Citation: Zheng J, Yan P, Gu M, Wagner MJ, Hays KA, Chen J, Li X, Wang C, Zhang J-G, Liu J and Xiao J (2015) Interfacial reaction dependent performance of hollow carbon nanosphere – sulfur composite as a cathode for Li-S battery. Front. Energy Res. 3:25. doi: 10.3389/fenrg.2015.00025 Interfacial reaction dependent performance of hollow carbon nanosphere – sulfur composite as a cathode for Li-S ...

The compact measurement system for absolute density of oxygen ~O! atom has been developed, which employs a vacuum ultraviolet absorption spectroscopy ~VUVAS! technique with a high-pressure microdischarge hollow cathode lamp ~MHCL! as a light source. The influences of self-absorption, emission line profile of the MHCL, and background absorption of oxygen molecule (O2) on the determination of abs...

To investigate the space charge neutralization effects in the extraction gap of a laser ion source (LIS) [1] a high current density electron beam with low energy spread is needed. The transient hollow-cathode discharge (THCD) source [2] has the required characteristics. The THCD is a pulsed hollow-cathode glow discharge that operates at low gas pressure (101 mbar) and high applied voltage. Char...

Branching fractions were measured for electric dipole transitions from the 5p upper levels to the 5s levels in neutral krypton atoms. The measurements were made with a wall-stabilized electric arc and a 2m monochromator for the spectral lines in the visible, and with a hollow cathode lamp and the NIST 2m–Fourier transform spectrometer for the lines in the near infrared. A semi-empirical calcula...

The flow system developed for the determination of serum calcium by automated atomic absorption spectrophotometry (AAS) was adapted to the determination of serum magnesium. A comparison of the results of analyses by the present procedure and by an automated fluorometric procedure on identical serum specimens shows excellent agreement. from this laboratory described tile application of automated...

In this study a headspace spectrophotometric method is proposed for analysis of dichloromethane and isobutyl methyl keton (IBMK) residues in the ampicillin powder. Ampicillin is dissolved in 1 M NaOH in the vessel of an arsenic analyzer unit of an atomic absorption spectrophotometer. After 3-min stirring, the headspace has flowed by air into the flow-through cell and its absorbance is read at 1...