scholarly journals Recent advances of microbial breeding via heavy-ion mutagenesis at IMP

2017 ◽  
Vol 65 (4) ◽  
pp. 274-280 ◽  
Author(s):  
W. Hu ◽  
W. Li ◽  
J. Chen
Keyword(s):  
Heavy Ion ◽  
Recent Advances ◽  
Microbial Breeding

Recent advances in high current vacuum arc ion sources for heavy ion fusion

2001 ◽  
Vol 464 (1-3) ◽  
pp. 576-581 ◽  
Author(s):  
Niansheng Qi ◽  
Jochen Schein ◽  
Rahul R. Prasad ◽  
Mahadevan Krishnan ◽  
Andre Anders ◽  
...  
Keyword(s):  
Heavy Ion ◽  
Ion Sources ◽  
Vacuum Arc ◽  
High Current ◽  
Recent Advances ◽  
Heavy Ion Fusion

scholarly journals Freeze-out dynamics in heavy-ion collisions: Recent advances

Pramana ◽  
2015 ◽  
Vol 84 (5) ◽  
pp. 747-755
Author(s):  
Francesco Becattini
Keyword(s):  
Heavy Ion Collisions ◽  
Heavy Ion ◽  
Ion Collisions ◽  
Recent Advances ◽  
Freeze Out

scholarly journals Recent Advances in the Biology of Heavy-Ion Cancer Therapy

2010 ◽  
Vol 51 (4) ◽  
pp. 365-383 ◽  
Author(s):  
Nobuyuki HAMADA ◽  
Tatsuhiko IMAOKA ◽  
Shin-ichiro MASUNAGA ◽  
Toshiyuki OGATA ◽  
Ryuichi OKAYASU ◽  
...  
Keyword(s):  
Cancer Therapy ◽  
Heavy Ion ◽  
Recent Advances

Recent advances in heavy ion beam probe diagnostics (invited)

1990 ◽  
Vol 61 (10) ◽  
pp. 2989-2994 ◽  
Author(s):  
T. P. Crowley ◽  
S. C. Aceto ◽  
K. A. Connor ◽  
J. W. Heard ◽  
R. L. Hickok ◽  
...  
Keyword(s):  
Ion Beam ◽  
Heavy Ion ◽  
Recent Advances ◽  
Probe Diagnostics ◽  
Heavy Ion Beam ◽  
Heavy Ion Beam Probe

scholarly journals Recent Advances in Design for Low- and Medium-Energy Heavy Ion Accelerators

1979 ◽  
Vol 26 (3) ◽  
pp. 3645-3652 ◽  
Author(s):  
John A. Martin
Keyword(s):  
Heavy Ion ◽  
Medium Energy ◽  
Recent Advances

Recent advances in plasma devices based on plasma lens configuration for manipulating high-current heavy ion beams

2010 ◽  
Vol 81 (2) ◽  
pp. 02B704 ◽  
Author(s):  
A. Dobrovolskiy ◽  
S. Dunets ◽  
A. Evsyukov ◽  
A. Goncharov ◽  
V. Gushenets ◽  
...  
Keyword(s):  
Heavy Ion ◽  
Ion Beams ◽  
High Current ◽  
Recent Advances

Recent Advances in High Dispersion Spectroscopy of Globular Cluster Stars

1988 ◽  
Vol 132 ◽  
pp. 525-530
Author(s):  
Raffaele G. Gratton
Keyword(s):  
Globular Cluster ◽  
Globular Clusters ◽  
High Dispersion ◽  
Photographic Material ◽  
Recent Advances ◽  
Metal Abundances ◽  
Ccd Detectors ◽  
Major Progress

The use CCD detectors has allowed a major progress in abundance derivations for globular cluster stars in the last years. Abundances deduced from high dispersion spectra now correlates well with other abundance indicators. I discuss some problems concerning the derivation of accurate metal abundances for globular clusters using high dispersion spectra from both the old photographic and the most recent CCD data. The discrepant low abundances found by Cohen (1980), from photographic material for M71 giants, are found to be due to the use of too high microturbulences.

Axial Observation of X-Ray Spectra from a Beam-Foil Source

1988 ◽  
Vol 102 ◽  
pp. 339-342
Author(s):  
J.M. Laming ◽  
J.D. Silver ◽  
R. Barnsley ◽  
J. Dunn ◽  
K.D. Evans ◽  
...  
Keyword(s):  
Spectral Resolution ◽  
Heavy Ion ◽  
Ion Beams ◽  
Beam Axis ◽  
Doppler Broadening ◽  
X Ray ◽  
Beam Foil

AbstractNew observations of x-ray spectra from foil-excited heavy ion beams are reported. By observing the target in a direction along the beam axis, an improvement in spectral resolution, δλ/λ, by about a factor of two is achieved, due to the reduced Doppler broadening in this geometry.

Void-Lattice Formation in Natural Fluorite by Electron Irradiation

1976 ◽  
Vol 34 ◽  
pp. 614-615 ◽  
Author(s):  
L.E. Murr
Keyword(s):  
Electron Microscope ◽  
Electron Irradiation ◽  
Heavy Ion ◽  
High Energy ◽  
Stoichiometric Ratio ◽  
Direct Observations ◽  
Transmission Electron ◽  
Anion Vacancies ◽  
Cation And Anion Vacancies ◽  
Lattice Formation

The production of void lattices in metals as a result of displacement damage associated with high energy and heavy ion bombardment is now well documented. More recently, Murr has shown that a void lattice can be developed in natural (colored) fluorites observed in the transmission electron microscope. These were the first observations of a void lattice in an irradiated nonmetal, and the first, direct observations of color-center aggregates. Clinard, et al. have also recently observed a void lattice (described as a high density of aligned "pores") in neutron irradiated Al2O3 and Y2O3. In this latter work, itwas pointed out that in order that a cavity be formed,a near-stoichiometric ratio of cation and anion vacancies must aggregate. It was reasoned that two other alternatives to explain the pores were cation metal colloids and highpressure anion gas bubbles.Evans has proposed that void lattices result from the presence of a pre-existing impurity lattice, and predicted that the formation of a void lattice should restrict swelling in irradiated materials because it represents a state of saturation.

Electron and ion irradiation-induced dissolution of mechanical twins in the intermetalic U3Si: An in situ HVEM study

1989 ◽  
Vol 47 ◽  
pp. 652-653
Author(s):  
Charles W. Allen ◽  
Robert C. Birtcher
Keyword(s):  
Elevated Temperatures ◽  
Ion Irradiation ◽  
Ion Beam ◽  
National Laboratory ◽  
Argonne National Laboratory ◽  
Heavy Ion ◽  
High Energy ◽  
Mechanical Twinning ◽  
In Situ Experiments

The uranium silicides, including U3Si, are under study as candidate low enrichment nuclear fuels. Ion beam simulations of the in-reactor behavior of such materials are performed because a similar damage structure can be produced in hours by energetic heavy ions which requires years in actual reactor tests. This contribution treats one aspect of the microstructural behavior of U3Si under high energy electron irradiation and low dose energetic heavy ion irradiation and is based on in situ experiments, performed at the HVEM-Tandem User Facility at Argonne National Laboratory. This Facility interfaces a 2 MV Tandem ion accelerator and a 0.6 MV ion implanter to a 1.2 MeV AEI high voltage electron microscope, which allows a wide variety of in situ ion beam experiments to be performed with simultaneous irradiation and electron microscopy or diffraction.At elevated temperatures, U3Si exhibits the ordered AuCu3 structure. On cooling below 1058 K, the intermetallic transforms, evidently martensitically, to a body-centered tetragonal structure (alternatively, the structure may be described as face-centered tetragonal, which would be fcc except for a 1 pet tetragonal distortion). Mechanical twinning accompanies the transformation; however, diferences between electron diffraction patterns from twinned and non-twinned martensite plates could not be distinguished.

Sign in / Sign up

Export Citation Format

Share Document