Download Angle 5

Thank you for your interest in Angle 5 software!

Here you can dowload the latest version. You can use it for fresh installation or for update/upgrade of your current installation of Angle 5.

Angle 5 can be freely downloaded and installed on any computer. Unregistered copies of Angle will work in demo mode with all functions enabled. In Angle 5 it is possible to run calculations with in-built demo detectors and evaluate the results, so as to become more familiar with the scope and capabilities of the software without/before being registered. This is aimed at making you familiar with the software, but also for demonstration and teaching purposes.


Angle 5 is compatible with all 32-bit or 64-bit versions of Microsoft Windows from Windows XP to the latest ones. There are no other system requirements. Faster processors are recommended, reducing calculation times.

If you have already installed Angle 5, you do not need to uninstall it first – simply run the installation file and your existing version will be updated.

If your computer is connected to the Internet, you can update it even easier: just click Help and then “Check for Updates” button - Angle will be up to date in a few moments. You can also check the “Automatic update” option in settings and define how often Angle should check for new versions.

Previous versions

Angle 4 was superseded by Angle 5 in August 2022 and is no longer available. Old users can still download it by clicking the following link: ANGLE_4_Setup.exe .

To upgrade Angle 4 license to Angle 5, please contact us.

Angle 3 was superseded by Angle 4 in September 2016 and is no longer available. Old users can still download it here: ANGLE_3_Setup.exe .

Angle 5 User Guide

Angle 5 User Guide is available in PDF fomat. You can freely download it to learn about Angle 5.

User Guide is included in Angle 5 installation package, so if you have already installed Angle 5 there is no need for download – just run it from Angle program group in Start Menu.

Previous versions

Angle 4 User Guide is also available for download. It is available in English and Chinese language.

Download relevant articles

  1. ANGLE v2.1 – New version of the computer code for semiconductor detector gamma-efficiency calculations, S. Jovanovic, A. Dlabac and N. Mihaljevic, Nuclear Instruments and Methods in Physics Research Section A, Volume 622, Issue 2, October 2010, Pages 385-391 → Full article
  2. Testing efficiency transfer codes for equivalence, T. Vidmar, N. Çelik, N. Cornejo Díaz, A. Dlabac, I.O.B. Ewa, J.A. Carrazana González, M. Hult, S. Jovanović, M.C. Lépy, N. Mihaljević, O. Sima, F. Tzika, M. Jurado Vargas, T. Vasilopoulou and G. Vidmar, Applied Radiation and Isotopes, Volume 68, Issue 2, February 2010, Pages 355-359 → Full article
  3. Performances of different efficiency calibration methods of high purity-germanium gamma-ray spectrometry in an intercomparison exercise, B.L. Yang, Q. Zhou, J. Zhang, S.M. Yao, Z.S. Li, W.H. Li and F. Tuo, Nuclear Science and Techniques, March 2019, 30:37 → Full article
  4. Accounting for detector crystal edge rounding (bulletization) in gamma-efficiency calculations – theoretical elaboration and practical application in ANGLE software, N. Mihaljević, A. Dlabač and S. Jovanović, Nuclear Technology and Radiation Protection, Volume XXVII, No. 1, March 2012, Pages 1-12 → Full article PDF document
  5. Evaluation of ANGLE®, a code for calculating HPGe detector efficiencies, V. M. Homan, Los Alamos National Laboratory, Report LA-UR--10-07191 → Full article PDF document
  6. The effective solid angle concept and ANGLE v3.0 computer code for semiconductor detector gamma-efficiency calculations – applicability to in-situ characterization of contaminated sites, S. Jovanovic, A. Dlabac, N. Mihaljevic, IAEA Analytical Quality in Nuclear Applications Series No. 49: In Situ Analytical Characterization of Contaminated Sites Using Nuclear Spectrometry Techniques Review of Methodologies and Measurements, Vienna, Austria, 2017, Pages 141-158 → Full article PDF document
  7. Reliability of two calculation codes for efficiency calibrations of HPGe detectors, K. Abbas, F. Simonelli, F. D’Alberti, M. Forte and M. F. Stroosnijder, Applied Radiation and Isotopes, Volume 56, Issue 5, May 2002, Pages 703-709 → Full article
  8. Testing of EFFTRAN and Angle software in comparison to GEANT 4 simulations in gamma spectrometry of cylindrical and noncylindrical sample geometries, A. Vraničar, J. Nikolov, N. Todorović, I. Maksimović, M. Mladenović, D. Mrđa and M. Travar, Nuclear Instruments and Methods in Physics Research Section A, Volume 986, 11 January 2021 → Full article
  9. Angle vs. LabSOCS for HPGe efficiency calibration, G. Stanić, J. Nikolov, I. Tucaković, D. Mrđa, N. Todorović, Ž. Grahek, I. Coha, A. Vraničar, Nuclear Instruments and Methods in Physics Research Section A, Volume 920, 11 March 2019, Pages 81-87 → Full article
  10. Efficiency calibration of a coaxial HPGe detector-Marinelli beaker geometry using an 152Eu source prepared in epoxy matrix and its validation by efficiency transfer method, H. Yücel, S Zümrüt, R. B. Narttürk, G. Gedik, Nuclear Engineering and Technology, in press → Full article PDF document
  11. Experimental verification of gamma-efficiency calculations for scintillation detectors in ANGLE 4 software, A. A. Thabet, A. D. Dlabac, S. I. Jovanovic, M. S. Badawi, N. N. Mihaljevic, A. M. El-Khatib, M. M. Gouda and M. I. Abbas, Nuclear Technology and Radiation Protection, Volume XXX, No. 1, March 2015, Pages 35-46 → Full article PDF document
  12. Well-type NaI(Tl) detector efficiency using analytical technique and ANGLE 4 software based on radioactive point sources located out the well cavity, A. M. El-Khatib, M. S. Badawi, A. A. Thabet, S. I. Jovanovic, M. M. Gouda, M. M. Mohamed, A. D. Dlabac, M. Abd-Elzahere, N. N. Mihaljevic and M. I. Abbas, Chinese Journal of Physics, Volume 54, Issue 3, June 2016, Pages 338-346 → Full article
  13. Calibration and use of well-type germanium detectors for low-level gamma-ray spectrometry of sediments using a semi-empirical method, M. Díaz-Asencio, J.A. Sanchez-Cabeza, A. C. Ruiz-Fernández, J. A. Corcho-Alvarado, L. H. Pérez-Bernal, Journal of Environmental Radioactivity, Volume 225, December 2020 → Full article
  14. Methods and software for predicting germanium detector absolute full-energy peak efficiencies, K. R. Jackman and S. R. Biegalski, Journal of Radioanalytical and Nuclear Chemistry, Volume 279, Number 1/January, 2009, Pages 355-360 → Full article
  15. Evaluation of Efficiency Calibration Methods of Semiconductor Gamma-Spectrometers, J. Slivka, I. Bikit, M. Veskovic, M. Krmar, N. Todorovic, D. Mrdja and S. Forkapic, Journal of Research in Physics, Volume 31, Issue 1, February 2007, Pages 19-30 → Full article PDF document
  16. An investigation of HPGe gamma-efficiency calibration software (ANGLE v.3) for applications in nuclear decommissioning, S. J. Bell, S. M. Judge and P. H. Regan, Applied Radiation and Isotopes, Volume 70, Issue 12, December 2012, Pages 2737–2741 → Full article
  17. Gamma radiation measurements of naturally radioactive samples at INFN Bari laboratory, F. Barile and L. Schiavulli, International Workshop on Advances in Sensors and Interfaces (IWASI), June 2019, Pages 291–296 → Full article
  18. Effects of grain size, mineralogy, and acid-extractable grain coatings on the distribution of the fallout radionuclides 7Be, 10Be, 137Cs, and 210Pb in river sediment, A. A. Singleton, A. H. Schmidt, P. R. Bierman, D. H. Rood, T. B. Neilson, E. S. Greene, J. A. Bower and N. Perdrial, Geochimica et Cosmochimica Acta, Volume 197, 15 January 2017, Pages 71-86 → Full article
  19. An Overview of the Establishment of Methodology to Analyse up to 5g-Sample by k0-Instrumental Neutron Activation Analysis, at CDTN, Brazil, M. Â. de B.C. Menezes and R. Jaćimović, Advanced Technologies and Applications of Neutron Activation Analysis, → Full article PDF document
  20. Computational Approaches on Photon-Attenuation and Coincidence-summing Corrections for the detection of gamma-emitting radionuclides IN foods, C. Rolle, Z. Lin and S. Healey, Applied Radiation and Isotopes, Volume 126, August 2017, Pages 134-137 → Full article
  21. Advanced quantitative gamma-spectrometry software for rapid and accurate assessment of food, feed, drinking water and other products during nuclear and radiological emergency, S. Jovanovic, A. Dlabac, International Experts Meeting on Assessment and Prognosis in Response to a Nuclear or Radiological Emergency, Vienna, Austria, 20-24 April 2015 → Full article PDF document
  22. Optimization of the efficiency calibration of HPGe detectors, D. Lusitani, P. Schiano, L. Gerevini, M. Ornago, M. Fumagalli and S. Romani, paper presented at the 37th National Congress on Radiation Protection, Bergamo, Italy, October 2018 (in Italian) → Conference programme
  23. Implementation of calculation codes in gamma spectrometry measurements for corrections of systematic effects, S. Jonsson, T. Vidmar and H. Ramebäck, Journal of Radioanalytical and Nuclear Chemistry, March 2015, Volume 303, Issue 3, pp 1727-1736 → Full article
  24. Modeling the impact of uncertainty in detector specification on efficiency values of a HPGe detector using ANGLE software, M. Miller and M. Voutchkov, Nuclear Technology and Radiation Protection, Volume XXVIII, No. 2, June 2013, Pages 169-181 → Full article PDF document
  25. A generalized mathematical model for efficiency calibration of gamma-detectors – Application to practical cases, N. Mihaljević, S. Jovanović and A. Dlabač, Nuclear Technology and Radiation Protection, Volume XXXIV, No. 1, March 2019 → Full article PDF document
  26. Calculation of the absolute peak efficiency of gamma-ray detectors for different counting geometries, L. Moens, J. De Donder, Lin Xi-lei, F. De Corte, A. De Wispelaere, A. Simonits and J. Hoste, Nuclear Instruments and Methods in Physics Research, Volume 187, Issues 2-3, 15 August 1981, Pages 451-472 → Full article
  27. Calculation of the absolute peak efficiency of Ge and Ge(Li) detectors for different counting geometries, L. Moens, F. De Corte, A. Simonits, Lin Xilei, A. De Wispelaere, j. De Donder and J. Hoste, Journal of Radioanalytical and Nuclear Chemistry, Volume 70, Issue 1-2, 1982, Pages 539-550 → Full article
  28. Calculation of the peak efficiency of high-purity germanium detectors, L. Moens and J. Hoste, The International Journal of Applied Radiation and Isotopes, Volume 34, Issue 8, August 1983, Pages 1085-1095 → Full article
  29. The need for cylindrical germanium gamma-ray detectors with accurately specified dimensions, L. Moens and K. Debertin, Nuclear Instruments and Methods in Physics Research Section A, Volume 238, Issue 1, 15 July 1985, Pages 180-181 → Full article
  30. ANGLE: A PC-code for semiconductor detector efficiency calculations, S. Jovanović, A. Dlabač, N. Mihaljević and P. Vukotić, Journal of Radioanalytical and Nuclear Chemistry, Volume 218, Number 1/April, 1997, Pages 13-20 → Full article
  31. On the applicability of the effective solid angle concept in activity determination of large cylindrical sources, P. Vukotić, N. Mihaljević, S. Jovanović, S. Dapčević and F. Boreli, Journal of Radioanalytical and Nuclear Chemistry, Volume 218, Number 1/April, 1997, Pages 21-26 → Full article
  32. “EXTSANGLE” – An extension of the efficiency conversion program “SOLANG” to sources with a diameter larger than that of the Ge-detector, N. Mihaljević, S. Jovanović, F. De Corte, B. Smodiš, R. Jaćimović, G. Medin, A. De Wispelaere, P. Vukotić and P. Stegnar, Journal of Radioanalytical and Nuclear Chemistry, Volume 169, Number 1/March, 1993, Pages 209-218 → Full article
  33. Introduction of Marinelli effective solid angles for correcting the calibration of NaI(Tl) field gamma-ray spectrometry in TL/OSL dating, F. De Corte, S. M. Hossain, S. Jovanović, A. Dlabač, A. De Wispelaere, D. Vandenberghe and P. Van den Haute, Journal of Radioanalytical and Nuclear Chemistry, Volume 257, Number 3/September, 2003, Pages 551-555 → Full article
  34. Contribution of 210Pb bremsstrahlung to the background of lead shielded gamma-spectrometers, D. Mrđa, I. Bikit, M. Vesković and S. Forkapić, Nuclear Instruments and Methods in Physics Research Section A, Volume 572, Issue 2, 11 March 2007, Pages 739-744 → Full article
  35. Production of X-rays by cosmic-ray muons in heavily shielded gamma-ray spectrometers, I. Bikit, D. Mrda, I. Anicin, M. Veskovic, J. Slivka, M. Krmar, N. Todorovic and S. Forkapic, Nuclear Instruments and Methods in Physics Research Section A, Volume 606, Issue 3, 21 July 2009, Pages 495-500 → Full article