Title: Collection of spectra of direct photons recorded in ISO neutron fields
Authors: Dombrowski, Harald, Physikalisch-Technische Bundesanstalt (PTB), Fachbereich 6.4 Neutronenstrahlung
Nolte, Ralf, Physikalisch-Technische Bundesanstalt (PTB), Fachbereich 6.4 Neutronenstrahlung, ORCID: 0000-0001-7204-5695
Contributors: HostingInstitution: Physikalisch-Technische Bundesanstalt (PTB), ISNI: 0000 0001 2186 1887
Resource Type: Dataset / Measurement Data
Publisher: Physikalisch-Technische Bundesanstalt (PTB)
Rights: https://creativecommons.org/licenses/by/4.0/
CC-BY 4.0 International
Dates: Available: 2021-06-15
Created: 2021-06-11
Classifications: INSPEC A2925D Neutron Sources ; INSPEC A2930K X-ray spectroscopy and gamma-ray spectroscopy
File: Download File (application/zip) 2.57 MB (2689699 Bytes)
MD5 Checksum: 3882e9e3a968bdacfda121fa3b8cb72c
SHA256 Checksum: 128fa7686f2a0cd07e88a5fffbe3f7a710f520806953b96fd3a82a2dc61c8945
Keywords: particle beam diagnostics ; accelerator induced neutron beams ; gamma-ray spectra ; time-of-flight spectrometry
Abstract: Compilation of prompt photon spectra recorded in ISO neutron fields produced at PIAF (PTB accelerator facility) by using a 1.5'' x 1.5'' CeBr3 detector.

This data set is an appendix to the article “Quantitative investigation of gamma radiation in accelerator produced ISO neutron fields” by H. Dombrowski and R. Nolte. The spectra are depicted in this article. The time-of-flight method was used to detect direct photons. By performing shadow cone measurements, a background subtraction was performed. In addition, the random background was subtracted. The latter consists of net spectra (likewise foreground minus shadow cone background spectra), which were recorded using a time-of-flight window located earlier on the timeline than the arrival of the prompt photons.
Remark: Recommended reading software: InterWinner, Genie2k, Maestro, WinSPEC, Cambio, ...

Description of the individual files:
Each spectrum is available in the IEC format (as defined in IEC 1455) and the SPE format (defined by IAEA, with the exception that the energy axis is defined according to widespread commercial spectrometry software). Because each data set is the result of two subtractions, negative channel entries are possible. This may cause problems when using certain commercial software packages. Therefore, all spectra are also available with removed negative channel entries, marked by “_nn” (no negative counts) in the file name. A consequence of the normalisation to the measured target charge is the fact that the spectra have no integer entries. Any software which is used to depict or process the spectra has to handle at least single precision channel entries.

The following system is used to identify each spectrum file:
The spectrum name includes a tag denoting the target and the neutron energy of the corresponding ISO neutron field.

Neutron energies:
According to ISO 8529.

Target tags:
Li - pure lithium
LiF - lithium fluoride
Dg – deuterium gas target
T – solid state tritium target (tritium implanted in titanium)