最終更新日：2025/12/06
(nuclear physics) Enriched uranium with 0.9-2% uranium-235, requiring a special moderator with very low neutron absorption (such as heavy water or high-purity graphite) in order to be able to sustain a nuclear fission chain reaction. Used to increase power output and efficiency in a few types of nuclear reactors capable of running on natural uranium, and for downblending of highly-enriched uranium from decommissioned nuclear weapons into low-enriched uranium suitable for use in commercial power reactors.
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slightly-enriched uranium
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元となった辞書の項目
slightly-enriched uranium
名詞
不可算名詞
(nuclear
physics)
Enriched
uranium
with
0.9-2%
uranium-235,
requiring
a
special
moderator
with
very
low
neutron
absorption
(such
as
heavy
water
or
high-purity
graphite)
in
order
to
be
able
to
sustain
a
nuclear
fission
chain
reaction.
Used
to
increase
power
output
and
efficiency
in
a
few
types
of
nuclear
reactors
capable
of
running
on
natural
uranium,
and
for
downblending
of
highly-enriched
uranium
from
decommissioned
nuclear
weapons
into
low-enriched
uranium
suitable
for
use
in
commercial
power
reactors.
日本語の意味
0.9～2%のウラン235を含む濃縮ウラン。特殊な減速材（例：重水、高純度グラファイトなど）を必要とし、核分裂連鎖反応を維持できるような特定の原子炉で利用される。 / 原子炉の出力と効率を向上させるため、または廃棄された核兵器の高濃縮ウランを低濃縮ウランにダウンブレンド（希釈）するために使用される。
意味（1）
(nuclear
physics)
Enriched
uranium
with
0.9-2%
uranium-235,
requiring
a
special
moderator
with
very
low
neutron
absorption
(such
as
heavy
water
or
high-purity
graphite)
in
order
to
be
able
to
sustain
a
nuclear
fission
chain
reaction.
Used
to
increase
power
output
and
efficiency
in
a
few
types
of
nuclear
reactors
capable
of
running
on
natural
uranium,
and
for
downblending
of
highly-enriched
uranium
from
decommissioned
nuclear
weapons
into
low-enriched
uranium
suitable
for
use
in
commercial
power
reactors.
