13 Result(s)
within
Chapter
D.J. Morrissey
-
Chapter and Conference Paper
The cyclotron gas stopper project at the NSCL
Gas stop** is becoming the method of choice for converting beams of rare isotopes obtained via projectile fragmentation and in-flight separation into low-energy beams. These beams allow ISOL-type experiments...
-
Chapter and Conference Paper
The LEBIT facility at MSU
The low-energy beam and ion trap facility LEBIT at the NSCL at MSU has demonstrated that rare isotopes produced by fast-beam fragmentation can be slowed down and prepared such that precision experiments with l...
-
Chapter and Conference Paper
Space charge effects on stopped projectile fragment drift in gas
The results from a particle-in-cell code developed to describe the drifting of ions in an ionized buffer gas are described. The rate of ionization was found to have a dramatic effect on the collection efficien...
-
Chapter and Conference Paper
Beam purification techniques for low energy rare isotope beams from a gas cell
A linear gas stop** cell has been implemented at the NSCL as part of the Low Energy Beam and Ion Trap (LEBIT) facility. The gas stop** cell is used to convert relativistic ions into low energy ions suitabl...
-
Chapter and Conference Paper
Precision experiments with rare isotopes with LEBIT at MSU
The Low-Energy Beam and Ion Trap facility LEBIT at the NSCL is in the final phase of commissioning. Gas stop** of fast fragment beams and modern ion manipulation techniques are used to provide beams for high...
-
Chapter and Conference Paper
Anomalous behaviour of matter radii of proton-rich Ga, Ge, As, Se and Br nuclei
Proton-rich isotopes of Ga, Ge, As, Se and Br had their total reaction cross-sections (σ R) measured. Root-mean-squared matter radii were determined from Glauber model calculations, which ...
-
Chapter and Conference Paper
Transition strength of neutron unbound states in 11Be
The transition strength of the first excited state in the neutron halo nucleus, 11Be, is known to be the strongest among the light nuclei [1]. In order to measure the transition strength of the particle unbound s...
-
Chapter and Conference Paper
Direct mass measurements of Ge, As, Se and Br isotopes close to the proton drip line
The masses of neutron-deficient nuclei close to the proton-drip line are an important input for the rapid proton capture (rp)-process modeling above 56Ni. The direct measurement of the masses of neutron-deficient...
-
Chapter and Conference Paper
Production of low- and high-energy radioactive-ion beams by fragmentation
The physics opportunities made possible by beams of rare isotopes are among the richest available in nuclear science. The rare-isotope accelerator (RIA) now under development is an innovative accelerator that ...
-
Chapter and Conference Paper
The LEBIT project at NSCL/MSU
The coupling of high-precision nuclear and atomic physics experiments to existing ISOL-facilities has turned out to be very successful in investigating the structure of nuclei far from stability (see [1] for a...
-
Chapter
The Decay of 19N
An intense secondary radioactive ion beam of 19N was produced at the National Superconducting Cyclotron Laboratory and quantitative measurements of the decay properties of this nuclide were made. A spectroscopic ...
-
Chapter
Magnetic Elements for the A1900 Fragment Separator at the NSCL
A high rigidity, large acceptance fragment separator, the A1900, is being built at the NSCL. The device consists of twenty-four quadrupoles, four dipoles, sixteen sextupoles and sixteen octupoles. There are fi...
-
Chapter
A Technique for Proton Drip-Line Studies via Fusion-Evaporation Reactions
A survey of the evaporation-residue cross-sections from fusion reactions in the mass region 56 < A < 100 was begun to investigate the utility of this process for producing proton-rich nuclei of astrophysical impo...
