MLZ is a cooperation between:
> Technische Universität München
> Helmholtz-Zentrum Hereon
> Forschungszentrum Jülich
MLZ is a member of:
> LENS
> ERF-AISBL
MLZ on social media:
MLZ (eng)
Lichtenbergstr.1
85748 Garching
FaNGaS
Fast Neutron-induced Gamma-ray Spectrometry
Schematic representation of FaNGaS
FaNGaS (Fast Neutron-induced Gamma-ray Spectrometry) is a new instrument at MLZ.1
The instrument consists of an electro-mechanically cooled HPGe detector connected to a digital spectrometer for data acquisition and is surrounded by a complex shielding.2
FaNGaS utilizes fission neutrons at the SR10 neutron beam port to induce gamma radiation for chemical analysis. The particularly large beam diameter at SR10 allows for irradiation of large objects. Non-destructive qualitative and quantitative elemental analysis is performed by use of prompt gamma irradiation that is induced by fission neutrons via nuclear reactions, such as (n,n’), (n,2n), (n,p) and (n,α).3
- Irradiation of large samples (archeology, industry etc.)
- Fundamental research (nuclear data, partial and total cross section measurements of different reactions etc.)
- Neutron collimator: 6cm diameter.
- Multi-Leaf-Collimator, adjustable up to 27 × 19 cm2.
- Typical beam size (sample size): 6 × 6 cm2.
- Typical neutron flux: ~ 108, depending on filter.
- n-type HPGe detector with a relative efficiency of 50%, connected to a digital spectrometer (DSPEC-50 from ORTEC).
- Detector cooling: CFG-X-COOL-III von ORTEC.
- Detector shielding: BPE, PE und Pb.
- Spectrum evaluation and calibration (non-linearity and efficiency) performed using the HYPERMET-PC Software.
[1] Rossbach, M., Genreith, C., Randriamalala, T. et al. J Radioanal Nucl Chem (2015) 304: 1359.
[2] T. Randriamalala et al., Nucl. Instum. Meth. A 806 (2016) 370-377
[3] A.M. Demidov, L.I. Govor, Yu.K. Cherepantsev, M.R. Ahmed, S. Al-Najjar, M.A. Al-Amili, N. Al-Assafi, and N. Rammo, “Atlas of Gamma-Ray Spectra from the Inelastic Scattering of Reactor Fast Neutrons”, Nuclear Research Institute, Baghdad, Iraq (Moscow, Atomizdat 1978).
Instrument scientists
Dr. Iaroslav Meleshenkovskii
Phone: +49 (0)89 158860-602
E-Mail: i.meleshenkovskii@fz-juelich.de
Dr. Eric Mauerhofer
Phone:+49 2461/61-3341
Email: e.mauerhofer@fz-juelich.de
PGAA
Phone: +49 (0)89 289-14906
Operated by
Funding
MLZ is a cooperation between:
> Technische Universität München> Helmholtz-Zentrum Hereon
> Forschungszentrum Jülich
MLZ is a member of:
> LENS> ERF-AISBL
MLZ on social media: