1. Status on 82 Se enrichment IDEA meeting Heidelberg, October 21, 2004 S. Jullian, LAL-Orsay

2. PLAN 82 Se programme: last meeting in COMO 8th April 82 Se : status today meetings in Moscow 4, 5 October Conclusion

3. CONCLUSION : COMO meeting 8 th April Gas centrifuge OK but technical discussions are needed F 6 X  X 82 Se is ``OK’’ 130 Te ``OK’’ 150 Nd no solution today for a few Kg cyclotron resonance is the device for any 2  isotope International level but Europe could be a motor CEA has the know how

4. 82 Se program : COMO meeting 8 th April Aim : to produce 2 kg of 82 Se very pure What is the radiopurety of F 6 82 Se ? How to control the chemistry ? F 6 82 Se  82 Se IF NOT then chemistry in INEEL (U.S) requirements 214 Bi < 20  Bq/kg (1/10 NEMO3) 200 Tl < 2  Bq/kg (1/10 NEMO3) schedule tentative ≈ 1 yearenrichment ≈ 1 yearchemistry Data  Monte-Carlo Radon Monte-Carlo 82 Se 932 g 216.4 days 0.55 kg.y NEMO3 June 2004 preliminary

6. Production of stable isotopes in RRC “Kurchatov Institute” Fluorides, oxyfluorides, Oxides, Carbonyls Metal organicsRare gases SiF 4, SF 6, GeF 4, SeF 6, TeF 6, MoF 6, IrF 6, WF 6 CrO 2 F 2, POF 3, Ni(PF 3 ) 4, OsO 4 Fe(CO 3 ) 5 CO 2 Sn(CH 3 ) 4 Pb(CH 3 ) 4 Cd(CH 3 ) 2 Zn(CH 3 ) 2 Xe, Kr Volatile compounds for centrifuge separation chlorides TiCl 4 TiCl 4 SiCl 3 H, GeCl 4 Ga(CH 3 ) 3 Candidates to double beta decay

7. ECP, Zelenogorsk SCP, Seversk UCP, Novouralsk EChPr, Lesnoi, EM ECP, Nizhniy Novgorod Sarov Moscow, RRC “Kurchatov Institute” ECP, St.Petersburg ELP, Angarsk Production of stable isotopes in RRC “Kurchatov Institute” Location of main producers of stable isotopes in Russia

8. 82 Se status today 2 meetings in Moscow 1) 4th October Anatoly Tchetsov, head of the lab. Russian Research Center, Kurchatov Institute Leonid Sosnine, Kurchatov Alexander Barabash, ITEP (Moscow), member of NEMO Conclusions  It is possible to produce 2kg of 82 Se 1 year, cost 120 k Euros 82 Se will be distilled at the end then the radiopurety could be better than before  The 82 Se will be rent for a long period  agreement is needed 2) Second meeting 5th October A. Barabash, M. Danylov (director ITEP) agreement ITEP, IN2P3 including 2kg 82 Se for a long period will be signed

9. 82 Se radiopurety ? Next tracko-calo detector requirements NEMO3 x 10 208 Tl < 2  Bq/kg, 214 Bi < 20  Bq/kg F 6 82 Se 82 Se 82 Se chemistry: distillation radiopurety ? enough ? new way HPGe measurements 6 kg of 82 Se will be better than 2 kg to improve the sensitivity and the next 4kg will be less expensive (~ 20 %)

10. CONCLUSION 82 Se programme possible 2kg - 1 year - 120 k Euros Radiopurety after distillation must be measured 6 kg ? Condition to get a reasonable cost and to avoid the customs problems (enriched materials are very expensive in the U.S): agreement for the use for a long period Future: a few100 kg seems to be possible Thank you S. Jullian, Heidelberg 21 October