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135Ba

135Ba is a radioactive isotope of the element barium with mass number 135. It is one of several isotopes of barium and is not a stable nuclide. The nucleus contains 56 protons and 79 neutrons.

Decay and nuclear properties

135Ba is neutron-rich relative to the line of beta stability and decays primarily by beta minus emission

Production and separation

135Ba is produced in nuclear environments, particularly as a fission product in reactors and during irradiation

Occurrence and applications

Natural, stable barium does not contain 135Ba in appreciable amounts; any measurable 135Ba in the environment

See also

Isotopes of barium; Beta decay; Nuclear fission products.

to
135La.
The
specific
decay
characteristics
(such
as
half-life)
depend
on
the
nuclear
state
and
are
documented
in
nuclear
data
compilations.
Gamma
emissions
accompanying
the
decay
are
used
in
spectroscopic
identification
and
tracking
of
the
isotope
in
research
settings.
of
barium
targets.
It
can
also
arise
from
neutron
capture
processes
involving
nearby
baarium
isotopes
and
subsequent
beta
decay
chains.
Chemically,
135Ba
behaves
like
other
barium
isotopes,
forming
Ba2+
salts
and
a
range
of
compounds
such
as
oxides
and
halides.
In
radiochemical
work,
standard
separation
techniques
for
alkaline
earth
elements
are
used
to
isolate
barium
isotopes
from
fission
products
and
other
contaminants.
is
typically
of
anthropogenic
origin.
In
scientific
research,
135Ba
is
studied
to
understand
beta-decay
schemes,
nuclear
structure,
and
related
topics
in
nuclear
chemistry
and
physics.
It
has
no
widely
used
commercial
or
medical
applications
beyond
its
role
in
basic
research.