Open to researchers outside the CTN

  Laboratory of Accelerators and X-Rays Diffraction

The Laboratory of Accelerators and X-Rays Diffraction has a long standing collaboration with research groups from the University and other research institutions, both national and international. Most of its researchers are also members of the Nuclear Physics Centre (CFNUL) and this association has been crucial in obtaining funds necessary for its continuous upgrading.

Ion Beam Laboratory(Unit of Physics and Accelerators)

Overview of the accelerator laboratory lobby.

Further information:

Equipment and Devices

This infrastructure has 5 major equipment:

2,5 MeV van de Graaff Accelerator photo

A 2,5 MV Van de Graaff accelerator with three
experimental beam lines, with all the relevant ion
beam techniques available: RBS, PIXE, NRA, Channeling,
ERDA and NRB with (p, g).

Oxford type microprobe

An Oxford Microbeams® type nuclear microprobe with
a lateral resolution of 1,5 mm. It is possible to
perform PIXE, RBS, STIM (Scanning
Transmission Ion Microscopy), CSTIM (Channeled
STIM), IBIC (Ion Beam Induced Charge) and IBIL (Ion Beam Induced Luminescence) type of analysis, in normal
conditions and external beam.

Implantation chamber photo

An 210 kV Ion implanter with a chamber allowing the
implantation of an area of 20x20 cm2. It is possible to carry
on implantation samples in the temperatures range of 77 K
up to 1273 K, in a controlled way. The connection of the
implantor to the RBS chamber of the van the Graaff
Accelerator, allows in situ analysis.

Tandem accelerator.

A 3 MV Tandem accelerator, equipped with an
accelerator mass spectroscopy (AMS) system with
a lateral resolution of 30 mm.
The installation of a 14C dedicated line is
foreseen [REEQ/814/CTM/2005].

A general view of the core of the Hotbird.

The Hotbird is a multipurpose instrument with
applications ranging from the phase identification
and determination of residual stresses on polycrystalline
alloys to two-dimensional mapping of Bragg peaks
in single crystalline materials. This instrument can
perform diffraction experiments from room temperature
up to 1400 ºC allowing in situ studies. These
high temperature experiments are very useful
and also very rare.

D8 diffractrometer from Bruker AXS is a versatile
equipment for materials characterization. Its
applicability extends from high resolution X-ray
diffraction/reflection measurements of single
crystals and advanced quantum heterostructures
to high-intensity powder diffraction of polycrystalline
materials. Important structural information from 3D
heterostructures such as strain in high quality
superlattices layers of combined crystals, 2D embedded
quantum wells in a matrix, 1D quantum wires, 0D quantum
dots and grain size/strain of powders are accessible
in this powerful equipment.

Bruker AXS

Technical Services

How to apply for beam time

  • Mail, fax or e-mail the person in charge (see contacts).
  • Beam time allocation is supervised by the IBL Coordinator Doctor Eduardo Alves, and occurs once a month.

Manuals and Software

Available users manuals and specialized software:

Equipment financed by
Managing Authority and Funding
FCT – Fundação para a Ciência e a Tecnologia
Plano Nacional de Re-equipamento Científico

Project Reference: REEQ/814/CTM/2005
Responsible Researcher: Eduardo Jorge da Costa Alves