Description and performance of MEA, The magnetic detector at adone

Abstract The experimental detector at Adone, MEA, which operates with its magnetic field perpendicular to the e + e − beams is described. Studies of the magnetic compensation for operation at Adone and resulting magnetic fields are presented. Particles are detected and analyzed using narrow-gap and wide-gap spark chambers which are triggered by scintillation and proportional counters. Momentum measurements for charged particles are made with Δ / p / p = ±0.07 at p = 1 Gev/ c ( B = 2.5 kG) and angles are measured to better than ± 1.5° over a solid angle of ∼0.3 × 4 π sr

Data processing for acoustic probe microscopy techniques

One of the merits of acoustic probe microscopy techniques is the possibility of exploiting traceable quantitative mechanical characterization of surfaces. To this end, after measurement proper data processing is needed in order to eliminate or compensate artifacts and distortions and eventually optimize extrapolated information. This chapter discusses the main points of data post processing, providing hints and strategies for repeatable analysis of surface data sets

Data processing for acoustic probe microscopy techniques

One of the merits of acoustic probe microscopy techniques is the possibility of exploiting traceable quantitative mechanical characterization of surfaces. To this end, after measurement proper data processing is needed in order to eliminate or compensate artifacts and distortions and eventually optimize extrapolated information. This chapter discusses the main points of data post processing, providing hints and strategies for repeatable analysis of surface data sets

Sub-ps pump and probe photoemission from polycrystalline molybdenum

5nonenonePARMIGIANI F.; PELOI M.; BANFI G.; SCHIAVUTA P.; PARMIGIANI F.Parmigiani, Fulvio; Peloi, M.; Banfi, G.; Schiavuta, P.; Parmigiani, F

Nanoelectrode Ensembles for As(III) detection

ISSN: 0009-277

Femtosecond nonlinear absorption of gold nanoshells at surface plasmon resonance

The nonlinear optical absorption of gold nanoshells (Au NSs) of different size, in water, was investigated using open aperture z-scan technique with femtosecond laser pulses at 806 nm. It is found that, in general, NSs behave as saturable absorbers. The level of saturation depends on the Au NSs structure and precisely on the ratio between the core size and shell thickness. The measured values of the nonlinear absorption coefficient show a dependence on both the repetition rate and the pulse energy. An average value of the nonlinear absorption coefficient beta = -4.5 +/- 1.0 x 10(-11) cm W(-1) is obtained from z-scan data of core-shell particles of inner and outer radius 95 and 110 nm, respectively, measured at 20 Hz repetition rate in the energy range 120-300 nJ