LENDA, a Low Energy Neutron Detector Array for experiments with radioactive beams in inverse kinematics

The Low Energy Neutron Detector Array (LENDA) is a neutron time-of-flight (TOF) spectrometer developed at the National Superconducting Cyclotron Lab- oratory (NSCL) for use in inverse kinematics experiments with rare isotope beams. Its design has been motivated by the need to study the spin-isospin response of unstable nuclei using (p, n) charge-exchange reactions at intermediate energies (> 100 MeV/u). It can be used, however, for any reaction study that involves emission of low energy neutrons (150 keV - 10 MeV). The array consists of 24 plastic scintillator bars and is capable of registering the recoiling neutron energy and angle with high detection efficiency. The neutron energy is determined by the time-of-flight technique, while the position of interaction is deduced using the timing and energy information from the two photomultipliers of each bar. A simple test setup utilizing radioactive sources has been used to characterize the array. Results of test measurements are compared with simulations. A neutron energy threshold of < 150 keV, an intrinsic time (position) resolution of \sim 400 ps (\sim 6 cm) and an efficiency > 20 % for neutrons below 4 MeV have been obtained.Comment: Version accepted for publication in Nucl. Instr. Methods A. Revised text, 2 new figures added (one in section 4 and one in section 7

Roentgenstrukturen und magnetische Eigenschaften einiger Seltenerd-Cobalt-Antimon-Legierungen

SIGLECopy held by FIZ Karlsruhe; available from UB/TIB Hannover / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekDEGerman

Aktivierung von aromatischen Azo- und Nitroverbindungen fuer den aeroben mikrobiellen Abbau: Bildung dioxygenasefaehiger Aminoaromaten durch Gratisreduktion (Phase II) Schlussbericht

SIGLEAvailable from TIB Hannover: F98B892+a / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekBundesministerium fuer Bildung, Wissenschaft, Forschung und Technologie, Bonn (Germany)DEGerman

Aktivierung von aromatischen Azo- und Nitroverbindungen fuer den aeroben mikrobiellen Abbau: Bildung dioxygenasefaehiger Aminoaromaten durch Gratisreduktion Schlussbericht

SIGLEAvailable from TIB Hannover: DtF QN1(36,52) / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekBundesministerium fuer Bildung, Wissenschaft, Forschung und Technologie, Bonn (Germany)DEGerman

GAS PHASE RAMAN SPECTRUM OF TCNQ AND PRESSURE DEPENDENCE OF THE MODES IN CRYSTALS OF TNCQ°

The Raman spectrum of gaseous TCNQ was obtained. Vibrations were detected at 40, 76, 145, 340, 1225, 1454, 1606 and 2230 (± 2) cm-1. The pressure dependence of the Raman modes in crystals of TCNQ, TTF, K(TCNQ), CS2(TCNQ)3 perylene-TCNQ and phenazine-TCNQ, were obtained in a diamond cell in the pressure range 0 to 70 Kbar. The mode Gruneisen parameter were found to span several orders of magnitude. It is concluded that all of the observed low frequency modes in this class of compounds are mixed modes of internal and external characters