Vrije Universiteit Brussel (VUB), 1090 Brussels, Belgium

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Presentation transcript:

Vrije Universiteit Brussel (VUB), 1090 Brussels, Belgium The influence of the “new” CRP on monitor reactions for charged particle beams. A. Hermanne (on behalf of all CRP participants) Vrije Universiteit Brussel (VUB), 1090 Brussels, Belgium Thanks to organising committee and chairman, attendance . 11-15/06/17 Application Nuclear Techniques – Creta 2017

Applications of Nuclear Techniques– Creta 2017 Monitoring of charged particle beams Technique to improve or confirm knowledge of beam intensity and/or energy. Activation analysis experiments and isotope production. Re-measurement of cross-sections (excitation function) of specific reactions on well-chosen targets. Comparison with evaluated-recommended values. Adapt beam parameters until good agreement. IAEA-database Thanks to organising committee and chairman, attendance 11-15/06/17 Applications of Nuclear Techniques– Creta 2017

Example (recent study Ba+deuterons) Thanks to organising committee and chairman, attendance 11-15/06/17 Applications of Nuclear Techniques– Creta 2017

Applications of Nuclear Techniques– Creta 2017 Genesis of “new” recommended database The IAEA organized in the 1996-2001 period a CRP : first attempt to provide standard – recommended cross-section data for monitoring and for isotope production. The results available as hardcopy TECDOC-1211. On-line in the medical portal (latest update 2007) https://www.nds.iaea.org/medical/monitor_reactions.html End 2012 launch of a new CRP entitled: “Nuclear Data for Charged-particle Monitor Reactions and Medical Isotope Production“ Aim to complement, broaden and upgrade the database. An important goal was the improvement on accuracy and reliability of cross-sections for monitoring of proton, deuteron, alpha and 3He particle beams. Thanks to organising committee and chairman, attendance 11-15/06/17 Applications of Nuclear Techniques– Creta 2017

Applications of Nuclear Techniques– Creta 2017 New systematic compilation of literature, especially for recent, well documented published data. Performing dedicated experiments. Confirm excitation functions for the existing reactions Extend to a wider energy range. Special attention to correction of outdated nuclear data. Latest values for g-ray abundances and half-lives used. Checked – corrected subgroup evaluators nuclear data. For most beams several new reactions were added Thanks to organising committee and chairman, attendance 11-15/06/17 Applications of Nuclear Techniques– Creta 2017

Applications of Nuclear Techniques– Creta 2017 Added 46Sc formation on natTi for p and d (48V) Added reactions on Cu for d and 3He (Cu backings) Thanks to organising committee and chairman, attendance 11-15/06/17 Applications of Nuclear Techniques– Creta 2017

Applications of Nuclear Techniques– Creta 2017 Most important progress is introduction of uncertainties on the recommended cross-sections for all monitor reactions. Compilers provided total uncertainties on ALL experimental cross-section values. Based on values published by the original authors or on their experience with experimental techniques. Selected data series Statistical fit by the Obninsk group using Padé approximation. Recommended excitation functions with confidence interval. Reduced uncertainties compared to the original data sets. Adding a correction for systematic effects and correlations, overall uncertainties of the order of 5% on the individual recommended cross sections are obtained. Thanks to organising committee and chairman, attendance 11-15/06/17 Applications of Nuclear Techniques– Creta 2017

Applications of Nuclear Techniques– Creta 2017 natTi(d,x)48V (15.97 d) 12 references New since 2007: Gagnon(2010),Hermanne(2012), Khandaker (2014), Takacs (2013) Deselected: Burgus(1954), Chen(194), Jung (1987), Takacs(1997) Adapt uncertainties where necessary to have consistent data. Padé fit 18 parameters 182 datapoints c2 = 1.04 Thanks to organising committee and chairman, attendance 11-15/06/17 Applications of Nuclear Techniques– Creta 2017

Applications of Nuclear Techniques– Creta 2017 Uncertainties (5% systematics) 12% at threshold 5-6% in 10- 50 MeV range Lower than original experiments Useful: 8- 40 MeV range 48Ti(d,2n)48V T = 7.32 MeV Low energy bump 47Ti(d,n)48V Q = 4.60 MeV Presence of 48Sc !!!!! T1/2 = 43.67 h Thanks to organising committee and chairman, attendance 11-15/06/17 Applications of Nuclear Techniques– Creta 2017

Applications of Nuclear Techniques– Creta 2017 natTi(d,x)46Sc (83,79d) New since 2007: All 12 Refs Hermanne (2014): 16 sets Deselected (7 sets) Andres(1960), Chen (1964), Hermanne (2014) (j,k,p) Jung(1987), Takacs (1997) Adapt uncertainties where necessary to have consistent data. Padé fit , 13 parameters, 372 datapoints, c2 = 0. 78 Thanks to organising committee and chairman, attendance 11-15/06/17 Applications of Nuclear Techniques– Creta 2017

Applications of Nuclear Techniques– Creta 2017 Uncertainties (5% systematics) 22% threshold 4.2 % in 12- 32 MeV range 4.8 % at 80 MeV Lower than original Useful 10- 80 MeV range 48Ti(d,a)48V Q= 3.97 MeV High energy 48Ti(d,2p2n)48V Q= 25.34 MeV Thanks to organising committee and chairman, attendance 11-15/06/17 Applications of Nuclear Techniques– Creta 2017

Cu(p,x)62Zn (9.186h) Cu(p,x)63Zn (38.47 m) Kellet: use ENSDF Nichols: new evaluation BIPM-5 2013 - library LNHB Slight changes, No reason for discrepancy Short half life !!! 31 Refs. 5 new 11 deselected c2= 1.035 10% threshold 4.7 % 7- 21 MeV 27 Refs. 9 new 7 deselected c2= 1.91 15- 100 MeV 80% threshold 5.2% in 25- 40 MeV range 7.2% at 100 MeV Thanks to organising committee and chairman, attendance 11-15/06/17 Applications of Nuclear Techniques– Creta 2017

natCu(3He,x)66Ga natCu(3He,x)65Zn All new 5 Refs. Golchert <15 MeV deselected Only 65Cu in study, no low energy Kondratev * 0.85 c2= 0.2 Uncertainty 20% near threshold 4.1% above 17 MeV All new 6 Refs. Golchert deselected c2= 1.69 Uncertainty 30% threshold Below 7% above 15 MeV Thanks to organising committee and chairman, attendance 11-15/06/17 Applications of Nuclear Techniques– Creta 2017

Applications of Nuclear Techniques– Creta 2017 High energy protons : 27Al(p,x)22Na Up to 1000 MeV 34 Refs in total New 14 (previously < 100 MeV) 12 deselected c2= 1.47 Uncertainties 20% near threshold < 4% in 45 – 800 MeV region Thanks to organising committee and chairman, attendance The presence of the strongly discussed bump in the 27Al(p,x)22Na excitation function around 100 MeV was confirmed by TALYS calculations as results of the onset of the reactions with separate nucleons. 11-15/06/17 Applications of Nuclear Techniques– Creta 2017

Applications of Nuclear Techniques– Creta 2017 TALYS calculation Underestimation at max Overestimation “bump” Sum of all = Total= TENDL2015 Strongest at low energy (p,pna) not (p,da) Bump = (p,3p3n)+(p,2p2nd) Thresholds 52.7 and 50.4 MeV Max. Contribution 5 mb 90-120 MeV Thanks to organising committee and chairman, attendance 11-15/06/17 Applications of Nuclear Techniques– Creta 2017

Applications of Nuclear Techniques– Creta 2017 Correction factor for the natMo(p,x)96Tc reaction, used as monitor in the systematic Levkovski study (1991) estimated : 0.8 by Takacs (2002) (measurement); 0.827 ± 0.05 by Qaim (2014) (comparison different reactions) 13 References One deselected Not Levkovski data c2= 1.34 Uncertainties 70% threshold 4.5- 6% up to 45 MeV Thanks to organising committee and chairman, attendance Cross-section at 30 MeV Levkovski : 250 ± 10 mb CRP: 192.9 ± 8.4 mb Correction factor 0.77 ± 0.07 11-15/06/17 Applications of Nuclear Techniques– Creta 2017

Applications of Nuclear Techniques– Creta 2017 Monitors only part of the CRP Diagnostic radionuclides (± 80 reactions) SPECT- g emitters b+ emitters - PET imaging generators (PET) Therapeutic radionuclides (± 30 reactions) Thanks to organising committee and chairman, attendance 11-15/06/17 Applications of Nuclear Techniques– Creta 2017

Applications of Nuclear Techniques– Creta 2017 A. Hermanne1, R. Capote2, B. V. Carlson3, J. W. Engle4, M. Hussain5, A. V. Ignatyuk6, M. Kellett7, T. Kibedi8, Kim Guinyun9, F .G. Kondev10, O. Lebeda11, A. Luca12, H. Naik13, Y. Nagai14, Nichols15, F. M. Nortier4, I. Spahn16, F. T. Tarkanyi17, M. Verpelli2 1Vrije Universiteit Brussel, Brussels, Belgium 2International Atomic Energy Agency, NAPC-Nuclear Data Section, Vienna, Austria 3 Instituto Tecnológico de Aeronáutica, Brazil 4Los Alamos National Laboratory (LANL), USA 5 Government College University, Lahore, Pakistan 6 Institute of Physics and Power Engineering (IPPE), Obninsk, Russia 7LNHB, CEA Saclay, France 8Australian National University, Canberra, Australia 9Kyungpook National University, Republic of Korea 10 Argonne National Laboratory, USA 11Nuclear Physics Institute, Rez, Czech Republic 12National Institute of Physics and Nuclear Engineering “Horia Hulubei”, Romania 13Bhabha Atomic Research Centre (BARC) Trombay Mumbai, India 14Japan Atomic Energy Agency (JAEA), Tokaimura Naka, Ibaraki-ken, Japan 15University of Surrey, Guildford, UK 16 Forschungszentrum Jülich (FZJ), Germany 17 Institute of Nuclear Research, Debrecen, Hungary Thanks to organising committee and chairman, attendance 11-15/06/17 Applications of Nuclear Techniques– Creta 2017

Applications of Nuclear Techniques– Creta 2017 Thanks to organising committee and chairman, attendance 11-15/06/17 Applications of Nuclear Techniques– Creta 2017

Applications of Nuclear Techniques– Creta 2017 Thanks to organising committee and chairman, attendance 11-15/06/17 Applications of Nuclear Techniques– Creta 2017

Applications of Nuclear Techniques– Creta 2017 Thanks to organising committee and chairman, attendance 11-15/06/17 Applications of Nuclear Techniques– Creta 2017

Applications of Nuclear Techniques– Creta 2017 Thanks to organising committee and chairman, attendance 11-15/06/17 Applications of Nuclear Techniques– Creta 2017

Applications of Nuclear Techniques– Creta 2017 Thanks to organising committee and chairman, attendance 11-15/06/17 Applications of Nuclear Techniques– Creta 2017

Applications of Nuclear Techniques– Creta 2017 Thanks to organising committee and chairman, attendance 11-15/06/17 Applications of Nuclear Techniques– Creta 2017

Applications of Nuclear Techniques– Creta 2017 Thanks to organising committee and chairman, attendance 11-15/06/17 Applications of Nuclear Techniques– Creta 2017