* 1272
13068
NUCLEAR SCIENCE ABSTRACTS
CHEMICAL CONSEQUENCES OF THE NUCLEAR RE-
ACTIONS *Fe(n,y) "Fe AND “Co(EC)Fe IN SOLUBLE PRUSSIAN
BLUE, Fenger, J. (Cambridge Univ., Eng.}; Maddock, A. G_;
Siekterska, K. E. J. Chem. Soc., A; No. 19, 3255-61(1970).
KFe{Fe(CN},], H.O was prepared with ‘8Fe in either the cation
or the complex, and both samples were neutron~irradiated and
analyzed for free and complexed **Fe. Parallel experiments were
performed on K,[Fe(CN),}, 3H,O. In Prussian Blue the retention
in the hexacyano-complex is ca, 5% and can be increased only
slightly by annealing, whereas it is ca. 20% in the simple hexa~
cyanide and increases to 30% on annealing. It is suggested that
the low retention in Prussian Blue ia due to competition between
recoil °3Fe and inactive Fe** for re-formation of the complex.
Moessbauer experiments were performed on KFe{Fe(CN)el, H,O
doped with Co as cation or in the complex. The spectra showed
that 5’Fe formed by the *'Co(EC}""Fe process in the cationte *'Co
doea not enter the complex, *'Fe formed from [®'Co(CN},] however appears principally in a different complex species, probably
losing a CN™ ligand to form a pentacyanide. (auth) (UK)
13069
DIRECT LABELLING REACTIONS OF RECOILING
335 AND 2p ATOMS, Turcanu, C.N. (Inst. for Atomic Physics,
Bucharest). Radiochem, Radioanal. Lett.; 5: 287-91(31 Dec
1970).
Direct labeling reactions of carrier-free “S$ and “=Pformed in
anhydrous AIC1, and FeCl, by (n, p) and (n, @) nuclear reactions,
reapectively, with S,C1,, SC1,, SOC],, SO,Cl,, PSC1,, POCI];, and
PCl,, were studied. The radiosulphur and the radiophosphorus
atoms present in AICl, and FeCl, targets show some differences
in these reactions. The study presents a new labeling method for
some chlorine ~ sulfur compounds. (auth)
13070
MC produced by “N(n,p) is found in metallic nitrides as carbide
“CMe, cyanide '4CN-, cyanamide MCN, and isocyanide OMCN-,.
The last two species result from secondary processes activated
by the radiation flux involving '4CN-. The carbide and the cyanide
are created in replacementcollisions of “C with nitrogen and
metal atoms, but these forms become stabilized only after long
irradiation times. The chemical forms of )3N formed in the
4N (n,2n) process in the nitrides are “NMec(nitride) and !JNN(mo-
lecular nitrogen}. The behaviour of °N suggests a low recail
energy of the hot atom. (auth)
CHEMICAL FORMS OF *'§ RESULTING FROM NEU-
TRON IRRADIATION OF LiCL IN SOLUTION IN METHANOL,
Meyer, J, P. (Centre de Recherches Nucleaires, Strasbourg),
Radiochim, Acta; 14: 154-6(Nov 1970). (In French).
The chemical forms of *"S produced by the "Clin,p) reaction
eeaeeeSaTe
Pan
aS
ata?
hora
ee Ts
f
Se
eS OY Ue
4
-
in methanolic solutions of lithium chloride were determined.
60% of the activity was found as monoatomic neutral sulfur, the
residual activity being distributed among sulfate (16%), sulfite
(10%), and sulfide (14%). In the presence of water, the sulfur
atoms are oxidized to sulfate. [he formation of S* ions leading
to sulfate and of another species giving sulfate in aqueous solution and sulfite with a reducing agent are considered. (auth)
Sis a Se. Weer cena
©
‘
13072
.
.
~
ao
<
wo?
<
ca PEA SD
Wyse
eke
ad
cence technique. Experimental cross ‘sections for resonance ie
fluorescence obtained with gaseous ‘J sources were in satia~
factory agreement with predictions using asimgemodel forthe:!tee
fragmentation process. (auth) =
fs
wn
ee oe
13074
NUCLEAR GAMMA-RESONANCE STUDY OF PROD-.
UCTS OF 8-DECAY OF !2!mgn, Lebedev, R. A.; Babeshkin, ‘.‘'**
Fines
A. M.; Nesmeyanov, An. N.; Popov, E, A. ‘Vestn. Mosk. Univ., oo
Ser. Ii. Khim.; 11: 627--8(Sep—Oct 1970), ‘(In Russian).
"he
The products of A decay of "!™Sn in solid inorganic tin com-
pounds have been studied by nuclear gamma-resonance. Con---ry
clusions concerning the state of electron shellg of daughter «a °.
|
antimony atoms were drawn from the isomerjo shiits., (auth), Se
13075
ON THE MECHANISM OF FORMATION ‘OF ANOMAL- me
OUS CHARGE STATES OF IRON AFTER *'Co ELECTRON CAPTURE |
IN Co COMPLEXES, Friedt, J. M.j Baggio-Saitovitch, E.; ehens
J, {Centro Brasileiro de Pesquisas Fisicas, Rio de vanes
.
Chem. Phys, Lett.; 7: 603-5015 Dec 1970), * { ee
ry
“
+
ie
The Moessbauer absorption spectraof ferric acetylacetonate
irradiated with electrons, are similar to the emission spectra
after electron capture in C-labeled Co{AcAe)s. This result
indicates that an autoradiolysis mechanism fs responsible in
molecular compounds for the stabilization of the anomalous iron
charge states. (auth)
Separation Processes
Refer also ta abstracts 12923, 12933-12935, 12947, 12999, 13039,
13043, 12625, and 13626.
j
.
;
CHEMICAL BEHAVIOR OF HOT ATOMS OF 4c AND
18N IN SEVERAL SOLID INORGANIC COMPOUNDS, I. METALLIC NITRIDES, Kuhry, J.G. (Centre de Recherches Nucleaires, Strasbourg). Radiochim, Acta; 14: 122-6(Nov 1970).
(In French).
13071
ge ye ena
;
CHEMICAL BEHAVIOR OF HOT ATOMS OF “4c AND
Mn IN SEVERAL SOLID INORGANIC COMPOUNDS.
I. ALKALI
CYANIDES, Kuhry, J.G. (Centre de Recherches Nucleaires,
Strasbourg). Radiochim. Acta; 14: 127-30(Nov 1970). (In
French),
The chemical forms of “N in sodium and potassium cyanides
are cyanide C!N-, cyanamide "NCN =, and molecularnitrogen
NN. These compounds result from reactions of °N with the
fragments of CN ligands and from an addition process on CN-.
The pile irradiation of the cyanides yields the following 4c
compounds: CN-, CU, elementary C, and CN,=. The formation
of these species is explained by similar processes and by gecondary thermal activated reactions with radiolytic decomposition
products of the targets. (auth)
13076
(AECL-2503) REVIEW OF HEAVY WATER PRODUCTION PROCESSES. Rae, H. K. (Atomic Energy of Canada Ltd.,
Chalk River (Ontario)),
Aug1969.
21p,
(CONF-651019-1;
CRL-91). Dep, NTIS (U.S. Sales Only), AECL $1.00,
From 15th Canadian Chemical Engineering Conference, Quebec
City, Canada,
The rapid growth of Canadian heavy-water-power-reactor
capacity has renewed interest In D,O production. The economic
source for large quantities of D,O today is considered to be water.
Processes Include hydrogendistillation (where pure hydrogen
streams are available for stripping) and several chemical ex~
change reactions. Chemical exchange of deuterium and hydrogen
between two compounds leads to the preferential accumulation
of the deuterfum in one. Choosing a gaa and a liquid, efficient
countercurrent multistage operation Is possible giving large en-
richment factors in a single tower. To obtain reflux the deu-
terium transfer must be reversed outside the tower using chemical conversion or another exchange tower operating at a higher ,
4
temperature. Chemical exchange between water and hydrogen
.
sulfide has been used at the USAEC Savannah River plant for 16’
yeara and is the process chosen for the three large heavy water
plants being built in Canada. Ammonia—hydrogen exchange and |
amine —hydrogen exchange are other processes. (auth)
+
13077
(ANL-7755} CHEMICAL ENGINEERING DIVISION
“
FUEL CYCLE TECHNOLOGY QUARTERLY REPORT, JULY—
SEPTEMBER 1970, Webster, D. 5.; Jonke, A. A.; Bernstein,
G. J.; Levitz, N, M.; Pierce, R. D.; Steindler, M. J.; Vogel, R. C.
(Argonne National Lab., Ill).
Oct 1970,
Contract W-S1-109- woe
eng-J8 Sop. Dep, NTIS,
oP
Work has been done during the period July through September,
1970 on fuel cycle technology projects in the following areas: (1)
development of a head-end process for LMFBR fuels, consiating .
of removal of stainless steel cladding ina zinc bath and subse—
quent reduction of the fuel oxide to metal, (2) laboratory-scale
and pilot-scale work to develop a fluid-bed process for the converaion of uranium nitrate and plutonium nitrate solutions to an
oxide form suitable for the fabrication of fuel shapes for LMFBR
fuel, (3) development of x-ray fluorescence spectrometry as an in-
line analytical method for determining the Pu/U ratio of oxide tuels
during fabrication, and (4) developmentof a centrifugal contractor
of small diameter and large length-to-diameter ratio for the plu-
tonium isolation steps in the solvent extraction of LMFBRfuels.
(auth)
Radiochemistry
Refer alsa ta abstracts 13068 and 13374.
13073
COULOMB FRAGMENTATION FOLLOWING THE
DECAY OF !31]_ Langhoff, H, (Franklin Inst., Swarthmore, Pa.),
Phys. Rev., A; 3: 1-5(Jan 1971),
The fragmentation of several diatomic iodine compounds as a
consequence of #~ decay was investigated. Information about the
velocity spectra of the Xe fragments was obtained by analyzing
the profiles of their y lines using the nuclear resonance fluores-
aire
hati
as
13078
(DOCKET-50201-60)
WEST VALLEY REPROCESS-
13079
(DOCKET-50201-61)
WEST VALLEY REPROCESS-
ING PLANT. License No, CSF-1. Technical Specifications
Change No. 13. (Division of Materials (andJ Licensing (AEC),
Washington, D.C.), 26Jdan1971. llp. Dep, NTIS.
Revision to Section 5.1 of the Technical Specifications (Effluent
and Environmental Monitoring) is presented. It was concluded that
the change does not present significant safety hazards considerations. (M.C.G.}
ING PLANT.
Quarterly Report, October 1-December 31,,19%0.
. .
yo -
DL
FE
eS
tn ooenteee