The Properties of Proportional Tubes and Ion Chambers with Glass Envelopes and External Graphite Electrodes

Cockroft, A.L.; Valentine, J M

doi:10.1088/0950-7671/27/10/302

Cited by 8 publications

(43 citation statements)

References 3 publications

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“…It was used to measure the energies of reaction products emitted at 90°, with respect to the beam, from targets bombarded with low energy deuterons or protons from a 2-MeV Van de Graaff accelerator. The magnet, with an annular geometry, was a copy of a 180° single focusing spectrometer used by Rutherford for alpha-decay studies [16]. Despite the small momentum range of the MIT spectrometer (pmax/pmin = 1.04) and the small solid angle (0.5 msr) it allowed a precise measurement of the radius of curvature of the ions orbit.…”

Section: The Early Stagementioning

confidence: 99%

“…MAGNEX was located at 12 central laboratory angle (actual spanned interval 7 -19 ). The magnetic field was set in order to transport the 16 O ejectiles, corresponding to the population of 15 C states in the 13 C( 18 O, 16 O 8+ ) 15 C reaction.…”

Section: Particle Identificationmentioning

confidence: 99%

“…The isotopes are separated but the loci present a sizeable width. A careful inspection of the 17 O and 16 O shows the presence of narrow lines, recognized as known states of the residual 14 C and 15 C nuclei. These lines are quite instructive to demonstrate the strong effect of the chromatic aberrations.…”

Section: Particle Identificationmentioning

confidence: 99%

“…In a first experiment a beam of 16 O 7+ at 100 MeV total incident energy was focused on a 181 g/cm 2 thick 197 Au target placed in the scattering chamber of MAGNEX, whose optical axis was centered at θopt = 18 . A system of collimators was used in order to limit the beam spot size and the angular divergence to 1.2 mm 0.8 mrad in the horizontal direction and 2.3 mm 1.8 mrad in the vertical one.…”

Section: Momentum Vector Reconstructionmentioning

confidence: 99%

“…A pepper-pot shaped diaphragm, shown in Figure 2.12, was positioned between the target and the spectrometer, thus only ions having a few well-defined trajectories were transmitted. The magnetic field of the quadrupole and dipole elements were set in order to transmit the elastically scattered 16 In a second experiment a beam of 18 O 6+ at 84 MeV bombarding energy collided on a 152 g/cm 2 thick 208 Pb target. MAGNEX was located at θopt = 12° and the magnetic fields of the optical elements were tuned, in different runs, in order to transmit the 18 O 8+ elastically scattered at different positions along the focal plane.…”

Section: Momentum Vector Reconstructionmentioning

confidence: 99%

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The MAGNEX spectrometer: Results and perspectives

et al. 2016

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This article discusses the main achievements and future perspectives of the MAGNEX spectrometer at the INFN-LNS laboratory in Catania (Italy). MAGNEX is a large acceptance magnetic spectrometer for the detection of the ions emitted in nuclear collisions below Fermi energy. In the first part of the paper an overview of the MAGNEX features is presented. The successful application to the precise reconstruction of the momentum vector, to the identification of the ion masses and to the determination of the transport efficiency is demonstrated by in-beam tests. In the second part, an overview of the most relevant scientific achievements is given. Results from nuclear elastic and inelastic scattering as well as from transfer and charge exchange reactions in a wide range of masses of the colliding systems and incident energies are shown. The role of MAGNEX in solving old and new puzzles in nuclear structure and direct reaction mechanisms is emphasized. One example is the recently observed signature of the long searched Giant Pairing Vibration. Finally, the new challenging opportunities to use MAGNEX for future experiments are briefly reported. In particular, the use of double charge exchange reactions toward the determination of the nuclear matrix elements entering in the expression of the half-life of neutrinoless double beta decay is discussed. The new NUMEN project of INFN, aiming at these investigations, is introduced. The challenges connected to the major technical upgrade required by the project in order to investigate rare processes under high fluxes of detected heavy ions are outlined. Magnetic spectrometers in Nuclear Reaction studies .

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Section: The Early Stagementioning

confidence: 99%

Section: Particle Identificationmentioning

confidence: 99%