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1
Estudos do sistema de vacuo para um acelerador linear de eletrons. (Studies of vacuum systems for a linear electron acelerator).
1985-01-01

In the study of vaccum parameter system in the structure of a linear electron accelerator feeded by radio-frequency, the periodical release of adsorbed gases should be considered. For high power machines a structure inside a vaccum shield are recommended....

National Technical Information Service (NTIS)

2
Analise exergetica do sistema de refrigeracao do acelerador de particulas Pelletron-Linac da Universidade de Sao Paulo. (Exergetic analysis of refrigeration system of the Pelletron-Linac particle accelerator of the University of Sao Paulo).
1993-01-01

The Pelletron-Linac accelerator of the University of Sao Paulo will use the existing electrostatic Pelletron accelerator as an injector for the linear superconducting accelerator (Linac), to increase the acceleration of the particles. The Linac uses a for...

National Technical Information Service (NTIS)

3
Desenvolvimento de um sistema postal para o controle de qualidade de dosimetrias realizadas em feixes de fotons produzidos em aceleradores lineares de uso clinico. (Development of a postal system for dosimetry quality control performed in photon beams produced by linear accelerators of clinical use).
1984-01-01

In this work a different system is proposed which is able to verify the absorbed depth dose given at two different depths, the irradiation field homogeneity and its coincidence with the light field of the machine, the source to surface distance used and t...

National Technical Information Service (NTIS)

4
Archive - NASA

El laboratorio ISIS esta exclusivamente equipado para colectar una variedad de ... El Centro de Investigaci�n NASA Ames tiene 3 experimentos en el X-37: ...

NASA Website

5
NASA - National Aeronautics and Space ... - Kennedy Media Gallery

Su figura es redonda y este est� equipado con censores para ayudar a los astronautas con tareas rutinarias, como tambien para monitorear el ambiente adentro ...

NASA Website

6
Programa y resumenes del segundo encuentro nacional sobre aceleradores. (Programme and summaries of the 2. national meeting on accelerators).
1991-01-01

The document includes the programme and the 10 abstracts of the 2. Mexican national meeting on accelerators. A separate indexing is provided for each abstract. (Atomindex citation 24:064160)

National Technical Information Service (NTIS)

7
Tr�nsito de Mercurio A�o 2006 - Ciencia - Ciencia @ NASA

13 Oct 2010 ... En este caso, nada es mejor que un telescopio equipado con un filtro solar H- alfa. Los filtros H-alfa captan con precisi�n el brillo rojo ...

NASA Website

8
Journal of Environmental Radioactivity special issue: international topical conference on Po and radioactive Pb isotopes.
2010-10-25

An international conference on polonium (Po) and radioactive isotopes was held in Seville Spain, 26-28 October 2009 at the Centro Nacional de Aceleradores. It was attended by 138 participants from 38 different countries. The sessions covered all aspects on Po and lead (Pb) such as radiochemistry, terrestrial and marine radioecology, kinetics, sedimentation rates, atmospheric ...

PubMed

9
Estudio experimental para el uso de hexafluoruro de azufre, gas dielectrico de los aceleradores de particulas. (Experimental study for the use of sulfur hexafluoride as dielectric gas in particle accelerators).
1993-01-01

The sulfur hexafluoride is the better dielectric gas in the world. It is used in particle accelerators, power stations and high voltage transformators. This is a high stable gas, but when is it used as dielectric is degraded in toxic and corrosive fluorid...

National Technical Information Service (NTIS)

10
Construcao de um acelerador de eletrons e sua utilizacao para o estudo da emissao secundaria em materiais dieletricos. (Construction of electron accelerator for studying secondary emission in dielectric materials).
1990-01-01

An accelerator for the generation of low energy electrons (in the 0.4 to 20 keV range) was constructed. The accelerator is equipped with some devices especially designed for the investigation of the electrical properties of electron-irradiated dielectrics...

National Technical Information Service (NTIS)

11
Status of the compact 1 MV AMS facility at the Centro Nacional de Aceleradores (Spain)
2008-05-01

Since February 2006, the new 1 MV multielement compact AMS facility SARA (Spanish Accelerator for Radionuclides Analyses) at the Centro Nacional de Aceleradores (CNA) in Sevilla (Spain) is fully operative. During the first one and a half year of operation, the viability of the system for the measurement of 10Be, 14C, 129I and plutonium isotopes, 239Pu and 240Pu, has been ...

NASA Astrophysics Data System (ADS)

12
Plutonium measurements on the 1 MV AMS system at the Centro Nacional de Aceleradores (CNA)
2008-11-01

Plutonium isotopes have been recently added to the list of radionuclides that can be measured with the new generation of compact AMS facilities. In this paper we present first experimental results concerning the development of the plutonium AMS technique at 680 kV on the 1 MV AMS system at the Centro Nacional de Aceleradores (CNA) in Sevilla, Spain. This is the first compact ...

NASA Astrophysics Data System (ADS)

13
Utilizacao de feixe de eletrons de alta energia gerado em acelerador, no tratamento de aguas de abastecimento e residuarias. (Utilization of high energy electron beam in the treatment of drinking and waste water).
1991-01-01

Samples of drinking water and waste water were irradiated using high energy electron beam with doses from 0.37kGy to 100kGy. Preliminary data show the removal of about 100% tri halomethanes (THM) in drinking water concentration from 2.7 (mu)g/1 to 45(mu)g...

National Technical Information Service (NTIS)

14
On the measurement of 10Be on the 1 MV compact AMS system at the Centro Nacional de Aceleradores (Spain)
2010-04-01

In this work we present the most recent improvements performed by our group on 10Be measurements on the 1 MV AMS system recently set up at the CNA (Centro Nacional de Aceleradores), in Seville (Spain). Our efforts have been focused on the study of the viability of our system for BeO and BeF- measurements. To achieve this, different standard materials have been measured to ...

NASA Astrophysics Data System (ADS)

15
Accelerator-based research activities at �Centro Nacional de Aceleradores�, Seville (Spain)
2008-05-01

In February 1998, almost 10 years ago, the set-up of the first IBA (ion beam analysis) facility in Spain took place with the arrival of a 3 MV tandem accelerator [J. Garc�a-L�pez, F.J. Ager, M. Barbadillo-Rank, F.J. Madrigal, M.A. Ontalba, M.A. Respaldiza, M.D. Ynsa, Nucl. Instr. and Meth. B 161 163 (2000) 1137]. Since then, an intensive research program using IBA techniques has been carried ...

NASA Astrophysics Data System (ADS)

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