Academic article

• Stavland, Stian Husevik; Tjugum, Stein-Arild; Hallanger, Anders et al. (2024). Characterization of multiphase flow through Venturi nozzle using gamma-ray tomography. (external link)
• Stavland, Stian Husevik; Arellano Prieto, Yessica Alexandra; Hunt, Andy et al. (2020). Multimodal Two-Phase Flow Measurement Using Dual Plane ECT and GRT. (external link)
• Stavland, Stian Husevik; Sætre, Camilla; Hjertaker, Bjørn Tore et al. (2019). Gas fraction measurements using single and dual beam gamma-densitometry for two phase gas-liquid pipe flow. (external link)
• Hjertaker, Bjørn Tore; Tjugum, Stein-Arild; Hallanger, Anders et al. (2018). Characterization of multiphase flow blind-T mixing using high speed gamma-ray tomometry. (external link)
• Hjertaker, Bjørn Tore; Maad, Rachid; Johansen, Geir Anton (2011). Dual-mode capacitance and gamma-ray tomography using the Landweber reconstruction algorithm. (external link)
• Mosorov, V.; Johansen, Geir Anton; Maad, Rachid et al. (2011). Monte Carlo simulation for multi-channel gamma-ray process tomography. (external link)
• Maad, Rachid; Hjertaker, Bjørn Tore; Johansen, Geir Anton et al. (2010). Dynamic characterization of a high speed gamma-ray tomograph. (external link)
• Maad, Rachid; Johansen, Geir Anton (2008). Experimental analysis of high-speed gamma-ray tomography performance. (external link)
• Hjertaker, Bjørn Tore; Maad, Rachid; Schuster, Erik et al. (2008). A data acquisition and control system for high-speed gamma-ray tomography. (external link)
• Maad, Rachid; Hjertaker, Bjørn Tore; Johansen, Geir Anton (2008). Semi-empirical scatter correction model for high-speed gamma-ray tomography. (external link)

Academic chapter/article/Conference paper

• Stavland, Stian Husevik; Arellano Prieto, Yessica Alexandra; Hunt, Andy et al. (2020). Multimodal analysis of gas-oil intermittent structures in co-current horizontal flow. (external link)

Academic lecture

• Stavland, Stian Husevik; Tjugum, Stein-Arild; Hallanger, Anders et al. (2018). Investigation of Venturi constriction characteristics in multiphase flow using high speed gamma-ray tomography. (external link)
• Maad, Rachid; Tjugum, Stein-Arild; Hallanger, Anders et al. (2016). Investigation of multiphase flow blind-T mixing effectiveness using high speed gamma-ray tomometry. (external link)
• Johansen, Geir Anton; Meric, Ilker; Maad, Rachid et al. (2014). Non-destructive monitoring of multiphase hydrocarbon flow by high-speed gamma-ray tomography. (external link)
• Melo, Silvio; Moreira, Icaro; Dantas, Carlos et al. (2012). The particle system iterative reconstruction technique in a high speed gamma-ray tomograph. (external link)
• Hjertaker, Bjørn Tore; Maad, Rachid; Johansen, Geir Anton (2012). Inherent dual mode single energy gamma-ray tomography. (external link)
• Johansen, Geir Anton; Hjertaker, Bjørn Tore; Tjugum, Stein Arild et al. (2012). Industrial applications of tomographic gamma-ray methods. (external link)
• Maad, Rachid; Hjertaker, Bjørn Tore; Johansen, Geir Anton et al. (2010). Dynamic characterization of a high speed gamma-ray tomograph. (external link)
• Hjertaker, Bjørn Tore; Maad, Rachid; Johansen, Geir Anton (2010). Static characterization of dual mode capacitance and gamma-ray tomography using the Landweber reconstruction algorithm. (external link)
• Mosorov, V.; Maad, Rachid; Lewndowski, S. et al. (2007). EXPERIMENTAL TEST OF A NOVEL RECONSTRUCTION APPROACH BASED ON IRREGULAR GRID FOR HIGH-SPEED GAMMA-RAY TOMOGRAPHY. (external link)
• Maad, Rachid; Sankowski, D.; Grudzien, K. et al. (2007). Comparing Analysis of Image Visualisation Accuracy of Electrical Capacitance Tomography and Gamma Tomography. (external link)
• Hjertaker, Bjørn Tore; Maad, Rachid; Almås, Ole Andreas et al. (2007). USB-based Data Acquisition and Control System for High Speed Gamma-ray Tomography. (external link)
• Maad, Rachid; Hjertaker, Bjørn Tore; Johansen, Geir Anton (2007). Semi-empirical Scatter Correction Models for High-Speed Gamma-Ray Tomography. (external link)
• Maad, Rachid; Mosorov, Volodymyr; Johansen, Geir Anton (2007). Comparing Analysis of Image Visualisation Accuracy of Electrical Capacitance Tomography and Gamma Tomography. (external link)
• Hjertaker, Bjørn Tore; Maad, Rachid; Johansen, Geir Anton (2007). USB-based data acquisition and control system for high speed gamma-ray tomography. (external link)
• Mosorov, Volodymyr; Maad, Rachid; Johansen, Geir Anton (2007). EXPERIMENTAL TEST OF A NOVEL RECONSTRUCTION APPROACH BASED ON IRREGULAR GRID FOR HIGH-SPEED GAMMA-RAY TOMOGRAPHY. (external link)
• Maad, Rachid; Hjertaker, Bjørn Tore; Johansen, Geir Anton (2007). Semi-empirical scatter correction models for high speed gamma-ray tomography. (external link)
• Maad, Rachid; Johansen, Geir Anton (2006). Experimental noise analysis of reconstructed pixel values in high-speed gamma-ray tomography. (external link)
• Maad, Rachid; Johansen, Geir Anton (2006). Experimental noise analysis of reconstructed pixel values in high-speed gamma-ray tomography. (external link)
• Hjertaker, Bjørn Tore; Johansen, Geir Anton; Cimpan, Emil et al. (2005). First experimental results of multiphase hydrocarbon flow monitoring using dual modality gamma-ray tomography and high frequency magnetic field sensors. (external link)
• Maad, Rachid; Johansen, Geir Anton (2003). Automatic weight matrix generation for gamma-ray tomography. (external link)
• Maad, Rachid; Johansen, Geir Anton (2003). Automatic weight matrix generation for gamma-ray tomography. (external link)

Poster

• Tjugum, Stein-Arild; Hjertaker, Bjørn Tore; Maad, Rachid et al. (2016). Investigation of Multiphase Flow-Regimes After a Blind-T Mixer and at the Throat of the Venturi – Using Gamma-Ray Tomography and CFD Modelling. (external link)

Doctoral dissertation

• Maad, Rachid; Johansen, Geir Anton (2009). Design optimization of high speed gamma-ray tomography. (external link)

Report

• Johansen, Geir Anton; Legoupil, Samuel; Cassanello Fernandez, Miryan et al. (2008). Industrial Process Gamma Tomography. (external link)

See a complete overview of publications in Cristin.