METHOD FOR
DECONTAMINATION OF RADIOACTIVE MATERIALS
RU2061266
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The invention relates to the decontamination and
purification of radioactive waste.
[0002]
There are numerous known methods for rendering liquid and
solid radioactive waste harmless, based on either
calcination or chemical treatment, which are limited in
functionality, are not safe during their implementation, and
also require expensive equipment.
[0003]
For example, a method is known for disinfecting contaminants
with tritium, which consists in connecting a metal part to
the negative pole of a direct current, bringing at least
part of the surface of said part into contact with a mixture
of water and an electrolyte, for example an aqueous solution
of soda or sulfuric acid, or water and a solid electrolyte.
An electric current with a density of 10 to 50 mA cm-2 is
passed between the part to be disinfected and the anode
connected to the positive pole of a direct current generator
in order to cathodically charge the hydrogen in the part and
replace the tritium adsorbed on the surface of the part with
hydrogen [1]. The closest to the proposed method is the
method of disinfecting radioactive materials based on the
effect of an external electrostatic field on the radioactive
material [2]. This method consists of placing the
radioactive material to be disinfected inside an
electrostatic generator of the Van de Graaff type, operating
at a voltage of 250-850 kV. Studies have shown that the
lifetime of the particles depends exponentially on the
polarity and magnitude of the applied voltage.
This method has a fairly effective effect on the yield of ?,
? and ? particles. The disadvantage of this method is the
use of complex high-voltage equipment. In addition, this
method cannot be reliably used in the presence of moisture
vapor in the atmosphere, which significantly narrows the
scope of its application.
[0004]
The technical result of using the invention consists in
expanding the functional capabilities while simplifying the
method, as well as increasing the efficiency of the method.
[0005]
In order to achieve the technical result in accordance with
the proposed method based on the effect of an external
electrostatic field on a radioactive material, the external
electrostatic field is initiated by a source in the form of
a system of conductive strips located on a dielectric
substrate folded in the form of a Mobius strip, wherein the
conductive strips are provided with contact terminals
located on the outer and inner sides of the Mobius strip
surface opposite each other.
[0006]
Fig. 1 shows a diagram of the implementation of the proposed
method; Fig. 2 shows a device with which the proposed method
is implemented; Fig. 3 shows graphical results obtained in
accordance with the proposed method.
[0007]
As can be seen in Fig. 1, the object to be disinfected 1 is
installed in the area of action of the electrostatic field
source 2.
[0008]
As can be seen in Fig. 2, the device with which the proposed
method is implemented contains conductive strips 3 located
on the surface of a dielectric substrate 4, folded in the
form of a Mobius strip.
The conductive strips have output contact terminals 5 and 6,
located on the outer and inner sides of the Mobius strip
surface opposite each other and connected to a voltage
source (not shown).
[0009]
The proposed method is based on the following physical
concepts.
It is known that the number of decaying nuclei is greater,
the more of them there are and the longer the time during
which the decay occurs.
If ?N is the number of parent nuclei decaying over the time
interval from t to t + ?t, is proportional to the number N
of nuclei existing at time t and the time interval ?t, then
in accordance with the fundamental law of radioactive decay
?N ? N ? t, where ? is the decay constant for a given type
of nucleus, which represents the relative decrease in the
number of nuclei undergoing decay per unit time ? (s-1) The
constant ? determines the rate of radioactive decay.
The value ?= 1/ ? is the average lifetime of a radioactive
isotope.
[0010]
From the fundamental law of radioactive decay follows the
law of decrease in time of the number of radioactive nuclei
N No e-?t, where No is the initial number of radioactive
nuclei at time t 0; N is the number of radioactive nuclei at
time t.
[0011]
On the other hand, it is known from [2] that the statistical
law of radioactive decay can be replaced by the law of
controlled decay.
This behavior of radionuclides can be explained by the fact
that the rest mass of a neutron exceeds the sum of the rest
masses of a proton and an electron by 782 keV. Therefore, by
applying an electric field of ? 782 kV to a radionuclide
sample, it is possible to control their decay.
Another possible method of controlling the decay of
radionuclides is known, which assumes the presence of a
source of particles, the movement of which in space creates
such strong Coulomb fields that the decay process of a
radioactive (unstable) nucleus can change.
As is known, the energy for stabilizing a nucleon in a
nucleus cannot be less than 782 keV. In addition, such
particles must have high penetrating power.
Of all the known particles of this type, the most suitable
is the magnetic monopole, predicted by P. Dirac in 1931.
When moving in space, a magnetic monopole must excite an
electric field around itself that exceeds the electric
fields from a monoelectric electron beam, i.e. the most
probable agent with which controlled radioactive decay can
be carried out is a magnetic monopole.
[0012]
For the specific implementation of the proposed method, a
setup consisting of a pulse generator and a monopoly emitter
was assembled in laboratory conditions.
The monopoly emitter is made in the form of a Mobius strip
with the following dimensions: width of the dielectric base
60 mm; diameter 100 mm.
[0013]
On the dielectric base there are flat copper conductors,
glued to the base with glue N 88.
The conductors are paralleled by two conductive strips
located inside and outside the emitter cavity. The width of
each conductor is 10.8 mm. The distance between conductors
is 1 mm. When implementing the method, a pulse voltage with
an amplitude not exceeding 2 V is supplied to the emitter at
a current of 0.6-1 kA, a pulse duration of 1.6x10-4 s at a
level of 0.5 and a pulse frequency of 100 Hz.
[0014]
As can be seen from Fig. 3, a distance of 1.5 m from the
monopole emitter is optimal for interaction with the
radionuclide, since it is at this distance that the monopole
gains the required speed.
[0015]
In the experiment, the studied ampoules with the
radionuclide 131J were irradiated for 15 minutes 3 times.
One of the ampoules was installed at a distance of 1.5 m
from the monopoly emitter, the other at a distance of 7 s.
The activity of both ampoules was measured using the
RKSB-104 device. The background was measured before and
after the main measurements. The results of the experiment
are shown in Fig. 3, where the error curves 1 and 2
correspond to the results of the studies at distances of 1.5
and 7 m, respectively. The dotted curves are the calculated
decay curves of the radionuclide without exposure.
[0016]
According to the measurement results (the arithmetic mean is
taken over 5 minutes of measurements), after 15 minutes of
exposure to magnetic monopoles on a source with the
radionuclide 131J, the number of decays was 70.
After 45 minutes of exposure, the number of decays was also
70. As can be seen from curve 1 (Fig. 3), 72 hours after
exposure the number of decays was 82, after 96 hours 75
decays. The frictional effect of the magnetic monopole flow
was carried out in time positions I, II, III.
[0017]
From curve 1 (Fig. 3) it is evident that without the effect
of monopoles on the source of radionuclides the number of
decays was 50.
Thus, when exposed, it becomes possible to control the decay
period and significantly increase the decay rate, which is
important when carrying out work to decontaminate
radioactive waste, as well as contaminated areas.







RU2123736
METHOD OF MAGNETIZING NON-MAGNETIC MATERIALS
The proposed invention relates to the field of magnetic
processing of non-magnetic materials used, for example, in
construction equipment.
There are known methods for magnetizing non-magnetic
materials /plastic, rubber, glass, etc./ based on the use of
electrically conductive media, such as water, which is
magnetized using specialized means. [see
V.I.Klassen. Magnetization of water systems, ed. II. - M.:
Chemistry, 1982, p. 19 - 1].
The disadvantage of known methods is that water loses its
magnetic properties after a few days.
Depending on the task at hand, magnetization means are
required to create a specific configuration of magnetic
fields with a change in the intensity gradient according to
a predetermined law.
A method is known for magnetic treatment of liquid with a
spiral-screw feed through a working space irradiated by a
magnetic field, which consists in the fact that the removal
of the salt composition is carried out axially through an
area with a smaller cross-section in relation to the
cross-sectional area of the spiral flow [see A.S.USSR N
313778, cl. [C 02 F 1/48 - 2].
Effective processing in a wide range of salt composition is
possible only with optimal values of magnetic field
strength, speed and the number of intersections of magnetic
fields of alternating polarity by the liquid.
In addition, a significant disadvantage of the known method
is the incomplete use of the magnetic field and the need to
regulate the processing modes, which cannot be carried out
promptly even with continuous monitoring of the salt content
of the liquid, since the magnetic field strength is not
linearly dependent on the salt content, and there are no
methods for indicating the effect of magnetic processing
that allow for a quick and reliable assessment of the effect
under operating conditions.
A method is known for magnetizing a liquid using a device
that allows for effective processing by creating a smooth
change in the magnetic field intensity gradient [see A.S.
USSR N 850154 C 02 F 1/48, no.N 28, 81 - 3].
The magnetization means comprises a cylindrical body with an
input and output branch pipe with a solenoid located outside
the body and a core installed inside the body, as well as an
additional solenoid, wherein the core is made in the form of
a piston.
A method for activating building mixtures is also known,
which can be considered as a prototype [a.s.
USSR N 392024 C 02 F 1/48 - 4], which consists of exposing
them to a magnetic field, which is carried out in
successively located magnetic fields rotating in opposite
directions, in the zones of action of which ferromagnetic
bodies, for example, of cylindrical shape, are placed.
The disadvantage of the known method is that the building
mixture retains its activity only for a few days, i.e. the
operational capabilities of such a mixture are limited.
The technical result of using the proposed technical
solution is the expansion of operational capabilities due to
the increase in the period of preservation of properties
acquired as a result of magnetization to infinity.
In order to achieve the technical result in accordance with
the proposed method based on the interaction of a
non-magnetic material with a source of an external magnetic
field, the external magnetic field is initiated by a source
in the form of a system of conductive strips located on a
dielectric substrate folded in the form of a Mobius strip,
the conductive strips are provided with output terminals
located on the inner and outer sides of the Mobius strip
surface opposite each other, while the magnetization time is
inversely proportional to the product of the thickness of
the magnetized substance by the specific gravity.
At present, the applicant, from an analysis of all types of
information publicly available in Russia, is not aware of
any methods that contain a set of features that are
distinctive in the claimed solution, i.e. the proposed
technical solution is new.
The claimed method has an inventive step, since it does not
clearly follow from the state of the art for a specialist.
The author conducted theoretical and experimental research,
which allowed him to identify the distinctive features of
the method that ensure the achievement of the technical
effect.
Fig. 1 shows a schematic diagram of the source device with
which the proposed method is implemented.
As can be seen in Fig. 1, the magnetized sample 1 is located
at some distance from the magnetic source 2.
Fig. 2 shows a cross-section of the magnetic source.
As can be seen in Fig. 2, the source contains a system of
conductive strips 3 located on a dielectric substrate 4,
folded in the form of a Mobius strip, wherein the conductive
strips are provided with output terminals 5, 6, located on
the inner and outer sides of the Mobius strip surface
opposite each other.
The physical concepts underlying the proposed method are as
follows.
There is a well-known natural phenomenon of ball lightning,
which, according to currently existing hypotheses, is the
result of vacuum polarization.
The formation of ball lightning is associated with the
existence of particles generated under certain conditions,
called monopoles.
Ball lightning, i.e. magnetic monopoles, were obtained in
the laboratory from a vacuum polarization source described
in patent application No. 4841331 of May 21, 1990, for which
a positive decision on the issuance of a patent was received
on August 8, 1991.
The proposed method is based on the interaction of fields of
a specific source, consisting of magnetic monopoles, with a
non-magnetic material.
It is assumed that magnetic monopoles emitted by the source
become trapped in the substance, and the substance changes
from a diamagnetic substance to a paramagnetic or
ferromagnetic substance.
The proposed method is specifically implemented as follows:
a sinusoidal voltage with an amplitude of about 12 V at
currents of about 200 A at a frequency of 0.01 Hz to 200 kHz
or a pulsed voltage with an amplitude of 1.5 - 3 V at
currents of 6 - 10 kA with a repetition frequency of 50 Hz
is applied to the source terminals. Magnetized samples are
located from the source of magnetic monopoles at a distance
of 0 to 5 meters or more, depending on the thickness of the
sample and the density of the material from which it is
made.
In laboratory conditions, work was carried out on
magnetization of non-magnetic materials.
The samples used for magnetization were plastic materials
such as polymethyl methacrylate, polyethylene,
fluoroplastic, epoxy resins, polyurethanes, polycarbonates,
rubbers, glass such as C-52; N 23; II-15; C-5, ceramics
22xC, and alundums.
The results of the analyses are presented in the table.
In the process of studying the effect of the magnetic field
of a monopole source on the magnetic parameters of
substances, it was established that the greatest induced
magnetic susceptibility is observed in those substances that
contain the largest number of oxygen atoms, which are
paramagnetic.
It has been empirically established that the optimal
processing zone for film materials is a spherical region
surrounding the device with a radius equal to five widths of
the dielectric base of the device.
In this zone, dielectrics can be pulled at speeds from 0 to
30 m/sec without deterioration in magnetization quality.
In the rest of the surrounding space, in a spherical region
from five widths of the dielectric base of the monopole
source, at least up to 100, materials can be magnetized in
compact form in pieces, blocks, etc., and in this case,
magnetization requires more time than for film ones.
The magnetization time is approximately inversely
proportional to the product of the thickness and the
specific gravity of the material.
Durability tests showed that the magnetization of the
samples did not disappear for at least a year when stored at
room temperature.
All magnetization experiments were carried out with a
monopole source manufactured in laboratory conditions with
the following parameters: - the dielectric base is made of
lavsan, 60 mm wide and 100 ?m thick; - conductive tracks are
made of aluminum Al, 10 mm wide and 10 ?m thick; - the gap
between tracks is 1 mm.
The proposed invention can be used in electrical
engineering, medicine, and construction.