4,372 Works

PROPOSAL OF MEASURING THE TOTAL PHOTONUCLEAR CROSS SECTION BETWEEN 300 MeV AND 1.2 GeV

M. ANGHINOLFI, N. BIANCHI, P. CORVISIERO, E. DE SANCTIS, S. FRULLANI, F. GARIBALDI, G. GERVINO, C. GUARALDO, P. LEVI SANDRI, V. LUCHERINI, V. MUCCIFORA, E. POLLI, A. R. REOLON, G. RICCO, M. RIPANI, P. ROSSI, M. SANZONE, M. TAIUTI, M. G. URCIOLI & A. ZUCCHIATTI

Available Energy for Life on a Planet, with or without Stellar Radiation

L. Sertorio & G. Tinetti
The quest for life in the Universe is often affected by the free use of extrapolations of our phenomenological geocentric knowledge. We point out that the existence of a living organism, and a population of organisms, requires the existence of available energy or, more precisely, available power per unit volume (Sect. 1). This is not a geocentric concept, but a principle that belongs to the foundations of thermodynamics. A quest about availability in the Universe...

Characterization of Avalanche Photo Diodes for the First Super-Module of the ALICE Electromagnetic Calorimeter

F. Astuti, A. Badalà , F.Blanco, F.Fichera, N.Giudice, A.Grimaldi, N.Guardone, P. La Rocca, F. Librizzi, G.S. Pappalardo, C. Petta, A. Pulvirenti, F. Riggi, S.Urso & R.Vernet
A status report is given of the ongoing activities in Catania concerning the testing procedures for the Avalanche Photo Diodes (APD) to be used in the first super-module of the ALICE electromagnetic calorimeter. A description of the equipment, testing procedure and protocol, together with results from a first sample of APDs are reported.

DATA ACQUISITIVE ROUTINES FOR PEPR

P. ALLEN, L. BARONE, I. LAAKSO, F. MARCELJA, G. PIREDDA, V. ROSSI, G. SUSINNO, L. VOTANO & L. ZANELLO

THE LONGITUDINAL-MOMENTUM DISTRIBUTION OF CHARM MESONS PRODUCED IN (pp) INTERACTIONS AT SQR(s) = 62 GeV

M. BASILE, G. CARA ROMEO, L. CIFARELLI, A. CONTIN, G. D'ALI', P. DI CESARE, B. ESPOSITO, P. GIUSTI, T. MASSAM, R. NANIA, F. PALMONARI, G. SARTORELLI, G. VALENTI & A. ZICHICHI

Reproducible D/Pd Ratio > 1 and Excess Heat Correlation by 1-ms-Pulse, High-Current Electrolysis

F. Celani, A. Spallone, P. Tripodi, A. Petrocchi, D. Di Gioacchino, M. Boutet, P. Marini, V. Di Stefano, M. Diociaiuti & W. Collis
A high-current (up to 100A), short-pulse (1-ms duration) electrolysis technique is presented that permits high loading (D/Pd up to 1.2) of deuterium in palladium cathodes. Several different cold-worked palladium plates were used as cathodes, and some underwent surface treatments (oxidation or addition of intermetallic compounds). The surface-treated plates showed atypical deuterium absorption dynamics, and the D/Pd loading ratio exceeded 1. Moreover, during initial loading, these cathodes showed anomalous excess heat (up to 80%) far greater...

Electromagnetism in Nonleptonic Weak Interactions

G. Eker G. Isidori, G. Mddot{U}Ller, H. Neufeld & A. Pich
We construct a low-energy effective field theory that permits the complete treatment of isospin-breaking effects in nonleptonic weak interactions to next-to leading- order. To this end we enlarge the chiral Lagrangian describing strong and ΔS=1 weak interactions by including electromagnetic terms with the photon as additional dynamical degree of freedom. The complete and minimal list of local terms at next-to-leading order is given., We perform the one-loop renormazation at the level of the generating functional...

INFUENCE OF GAS MIXTURE AND CATHODE MATERIAL ON LIMITED STREAMER OPERATION

G. BATTISTONI, P. CAMPANA, V. CHIARELLA, U. DENNI, B. D'ETTORE-PIAZZOLI, E. IAROCCI, G. MANNOCCHI, G. NICOLETTI & P. PICCHI

High Granularity Silicon Beam Monitors for Wide Range Multiplicity Beams

A. Mozzanica, F. Risigo, A. Bulgheroni, M. Caccia, C. Cappellini, M. Prest, L. Foggetta, B. Buonomo, G. Mazzitelli, P. Valente & E. Vallazza
positron beams in the energy range tens of MeV-750 MeV in a wide range of intensity, from 1 up to 10^10 particles per pulse. The pulse rate is 50Hz. This paper describes the implementation of two types of high granularity silicon beam monitors: two pairs of silicon strip detectors readout by single particle ASICs for the low multiplicity range (1-100 particles) and a silicon strip detector with charge integrating electronics to cover the remaining range...

Superconducting Superstructure for the TESLA Collider

J. Sekutowicz, M. Ferrario & C. Tang
We discuss the new layout of a cavity chain (superstructure) allowing, we hope, significant cost reduction of the RF system of both linacs of the TESLA linear collider. The proposed scheme increases the fill factor and thus makes an effective gradient of an accelerator higher. We present mainly computations we have performed up to now and which encouraged us to order the copper model of the scheme, still keeping in mind that experiments with a...

EXPERIMENTAL CONFIRMATION OF THE 1100 STRUCTURE AND FIRST OBSERVATION OF THE LEPTONIC DECAY OF THE RHO'(1250)

S.BARTALUCCI, G.BASINI, S.BERTOLUCCI, M.FIORI, P.GIROMINI, R.LANDAU, E.METZ, C.RIPPICH & A.SERMONETA

The Description of the TempHuRA-Meter

M. Anghinol¹, M. Battaglieri, P. Cocconi, R.DeVita, F. Parodi, M. Ripani, A. Rottura, M. Taiuti & S. Zavatarelli

Anomalous Heat Generation by Surface Oxidized Pd Wires in a Hydrogen Atmosphere

A. Marmigi, A.Spallone, F.Celani, P. Marini & V.Di Stefano
Thin Pd wires (diameter 50 micrometers) surface oxidized through Joule heating have been loaded in a Hydrogen atmosphere at pressures in the range 1 - 10 bar. The atomic ratio H/Pd reached in the experimental conditions has been evaluated through its relationship with the electrical resistivity of Hydrogen loaded Pd. It was found that the loading rate of the surface oxidized Pd wires is exceptionally higher than with the untreated ones (full loading in a...

Extensions of the Standard Model

Fabio Zwirner
Rapporteur talk at the International Europhysics Conference on High Energy Physics, Brussels (Belgium), July 27-August 2, 1995. This talk begins with a brief general introduction to the extensions of the Standard Model, reviewing the ideology of effective field theories and its practical implications. The central part deals with candidate extensions near the Fermi scale, focusing on some phenomenological aspects of the Minimal Supersymmetric Standard Model. The final part discusses some possible low-energy implications of further...

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  • 2015
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  • Istituto Nazionale di Fisica Nucleare. Centro Nazionale Analisi Fotogrammi
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