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## IV. CONCLUSION 

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The NEMO 3 detector has been operating within its target performance specifications since February 2003. The 2 νββ decay has been measured for seven isotopes with high statistics and greater precision than previously. The $^{100}$Mo 2 νββ decay to the 0 + 1 excited state of $^{100}$Ru has also been measured. No evidence for 0 νββ decay was found for all seven isotopes. The best 0 νββ limits have been obtained with $^{100}$Mo ( > 1 . 1 · 10 24 y at 90% C.L.) 

