Zobrazeno 1 - 10
of 20
pro vyhledávání: '"G. J. deVries"'
Publikováno v:
Journal of Neurobiology. 36:410-420
intermediate numbers of BrdU-labeled cells in the ABSTRACT: Seasonal changes in vertebrate dentate gyrus, but was as effective as long-term photo- brain function are pervasive, but annual cycles in the periodic exposure in the subependymal zone. Phot
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7e0ee25b14a7cb77583186631126203a
https://doi.org/10.1002/(sici)1097-4695(19980905)36:3<410::aid-neu8>3.0.co
https://doi.org/10.1002/(sici)1097-4695(19980905)36:3<410::aid-neu8>3.0.co
Publikováno v:
The Journal of Comparative Neurology. 353:439-450
Immunohistochemistry was used to survey the distribution of glutamic acid decarboxylase (GAD), the synthesizing enzyme for gamma-aminobutyric acid (GABA), throughout the visual system of the frog Rana pipiens. GAD-like immunoreactivity (GAD-LI) was a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4334d09e9b09135373ebcb1f75c0c58b
https://doi.org/10.1002/cne.903530311
https://doi.org/10.1002/cne.903530311
Autor:
P. Purgalis, C. F. Chan, Wulf B. Kunkel, W. F. Steele, Ka-Ngo Leung, O. A. Anderson, G. J. deVries, G. D. Ackerman, J.W. Kwan, Russell Wells, W. S. Cooper
Publikováno v:
Review of Scientific Instruments. 62:1521-1526
In testing a cesiated volume‐production negative ion source, we have obtained 75 mA of H− beam current in a 270 ms pulse length delivered downstream of the 87 keV preaccelerator. Optimum pressure in the source was less than 8 mT and the electron
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8d9ec06c4fd423a85622da02501bf55b
https://doi.org/10.1063/1.1142480
https://doi.org/10.1063/1.1142480
Autor:
W. F. DiVergilio, R. W. Hamm, Ka-Ngo Leung, G. J. deVries, Wulf B. Kunkel, C. A. Hauck, M. D. Williams, D. S. McDonald
Publikováno v:
Review of Scientific Instruments. 62:100-104
An rf driven multicusp source capable of generating 1-ms H{sup -} beam pulses with a repetition rate as high as 150 Hz has been developed. This source can be operated with a filament or other types of starter. There is almost no lifetime limitation a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f6ec0824b6fd9ae2651bdabafc23f926
https://doi.org/10.1063/1.1142315
https://doi.org/10.1063/1.1142315
Autor:
A. F. Lietzke, P. Purgalis, Ka-Ngo Leung, C. A. Hauck, Russell Wells, O. A. Anderson, J.W. Kwan, G. J. deVries, W. S. Cooper, Wulf B. Kunkel, C. F. Chan
Publikováno v:
Review of Scientific Instruments. 61:2378-2382
Based on recent experimental results made on the large and small multicusp volume H− sources, a new multicusp source has been designed to generate high‐brightness H− or D− beams for high duty factor or dc operations. Cesium will be introduced
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::07885fa9b7dbd8f78d505a8f764995d9
https://doi.org/10.1063/1.1141367
https://doi.org/10.1063/1.1141367
Publikováno v:
Review of Scientific Instruments. 67:1384-1386
High charge state ion beams are commonly used in atomic and nuclear physics experiments. Multiply charged ions are normally produced in an ECR or in an EBIS. Multicusp generators can confine primary electrons very efficiently. Therefore, the electric
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0a46b086e107453032577fda866749cb
https://doi.org/10.1063/1.1146676
https://doi.org/10.1063/1.1146676
Publikováno v:
Proceedings of International Conference on Particle Accelerators.
We have tested the radio-frequency driven H/sup -/ source and have shown that the H/sup -/ production efficiency and the beam emittance are similar to those obtained from the filament discharge. Typically the numbers are 2.8 mA/cm/sup 2kW and 0.017 /
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6e136fc6a71bceee20c174337813d49c
https://doi.org/10.1109/pac.1993.309589
https://doi.org/10.1109/pac.1993.309589
Autor:
W. S. Cooper, C. F. Chan, L. Soroka, W.B. Kunkel, G. D. Ackerman, G. J. deVries, Russell Wells, W. F. Steele, O. A. Anderson, J.W. Kwan
Publikováno v:
Kwan, J.W.; Ackerman, G.D.; Anderson, O.A.; Chan, C.F.; Cooper, W.S.; Vries, G.J. de; et al.(1991). Testing of a High Current DC ESQ Accelerator. Lawrence Berkeley National Laboratory: Lawrence Berkeley National Laboratory. Retrieved from: http://www.escholarship.org/uc/item/5xc9j1j6
A high current DC electrostatic quadrupole (ESQ) accelerator is being developed for negative-ion-based neutral beam heating and current drive on the next generation tokamak. Beam energy and current will eventually be in the megaelectronvolt and multi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::49e4b587a6deb455265d0bc565e95168
https://doi.org/10.1109/pac.1991.164834
https://doi.org/10.1109/pac.1991.164834
Autor:
C. F. Chan, Wulf B. Kunkel, W. F. Steele, Russell Wells, C. F. A. van Os, Ka-Ngo Leung, M. D. Williams, G. J. deVries, A. F. Lietzke, O. A. Anderson, J.W. Kwan, W. S. Cooper
Publikováno v:
Review of Scientific Instruments. 63:2705-2707
A D− surface‐conversion source using a solid barium converter is designed for steady‐state operation to produce 200 mA of D−. A similar ion source of twice the size as the one discussed here will meet the requirements set by the present US‐
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::56d23609271af1c439c5bd157d4dbaeb
https://doi.org/10.1063/1.1142829
https://doi.org/10.1063/1.1142829
Autor:
O. A. Anderson, J.W. Kwan, Ka-Ngo Leung, C. F. Chan, A. F. Lietzke, W. F. Steele, W. S. Cooper, G. D. Ackerman, G. J. deVries
Publikováno v:
Review of Scientific Instruments. 61:369-371
In testing a multicusp volume‐production H− ion source (20 cm diameter, 23 cm long), we optimized the gas pressure, the plasma electrode bias potential, and the magnetic filter. At the optimum pressure of 9 mTorr, the H− beam output increased l
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c79c50dee47a80a223bf59e26e57ad9d
https://doi.org/10.1063/1.1141296
https://doi.org/10.1063/1.1141296