Bank of Pure Isotopes

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Bank of Pure Isotopes

• Ezio Previtali
• INFN Sez. Milano
• Department of Physics
• University of Milano Bicocca

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Project activity in the first 18 months
18 months
12 months
6 months
- Negotiations for production of the selected
isotopes - Contact with Russian and US labs for
purification techniques
- Definition of a program for utilization of
available isotopes - Selection of new interesting
isotopes and discussion of enrichment and
purification techniques
- Formation of the isotope working group -
Contacts with Russian labs
milestones
- Report on new isotopes possibly produced in
Russia -Report on purification issues
- Report on possibilities of Russian labs -
Report on a recommended program - First
conclusions on isotope selection and purification
deliverables
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Milestones of the First six months
Formation of isotope working group
Ettore Fiorini University of Milano Bicocca and
INFN Sez. Milano Pietro Benetti University of
Pavia and INFN Sez. Pavia Carlo Bucci Gran Sasso
Laboratory of INFN Monica Sisti University of
Milano Bicocca and INFN Sez. Milano
Contact with Russian labs Contact with
Kurchatov Institute (Moscow) Contact with some
Research center in Russia
Evaluation of other labs Possible production in
USA Enrichment activities in Europe
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Available data production
HM and IGEX experiments
Actually in Ge diode
Isotopes production in Kurchatov Institute using
centrifugue
MiDBD CUORICINO
Actually in TeO2 crystal form
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Available data experiments
NEMO example
Isotope Mass kg
100Mo 7.2
130Te 1.3
82Se 1.0
116Cd .60
150Nd .05
96Zr .02
48Ca .01
Isotopes come from different institution It is
difficult to define future use It is important
to reconstruct the history It is crucial to
define the level of purity (this will come to
NEMO results)
Xenon experiment of INFN Milan example 10 kg of
Xe enriched in 136Xe and 10 kg depleted in 136Xe
was made in USA this materials was used for a
multiwire proportional chamber experiment today
this is part of the DAMA experiment with
scintillating Xe
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Data base on available isotopes
We need to insert in the data base all the
possible information mass of the
isotopes level of enrichments production
procedures and production laboratories purificati
on methods used chemical and physical
form customers of the material actual
experiment that use such isotopes possible
future application ........ ....
We would like to receive all the available
information from experiments that are now using
isotope
Strategy Availability for new experiments
during next few years Definition of a strategy
for allocate Isotopes Problems Different
experiments may need different chemical
composition Time schedule for distributing
available isotopes
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Selection of new and interesting Isotopes
Production resources Available techniques for
producing Enriched Isotopes Time needed for
production of a definite quantity of
material Cost of the enrichment Radioactive
purity at the end of the enrichment (quality test)
Purification after the enrichment Analysis of
purification techniques Procedures for obtaining
the final chemical compound Physical and
Chemical analysis on final production
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ICR (Ion Cyclotron Resonance) enrichment
In Como there was a proposal to develop the ICR
enrichment During the last six month we have
tried to evaluate the ICR approach. We have asked
to P. Louvet (a great expert in ICR) some
information He was in Milan for a seminar on ICR
at the beginning of October
ICR general characteristics it is possible to
enrich (in principle) all nucleus it presents a
very high throughput it is not clear the level
of purity of the final material it presents, at
the moment, a low production efficiency it
presents, probably, a lower level of enrichment
respect to centrifuge
To realize a big machine basic technologies are
available industrial support is probably
possible there is a lot of interest in the
plasma physics research other scientific
partners are possible (medicine, chemical
analysis, ...)
but this is a very big job.........