Abstract
Previous studies of the halide complex formation of element 105 and its anion exchange with triisooctyl amine (TIOA) were continued. The experiments were performed on a one-minute time scale with the computer-controlled liquid chromatography system ARCA II on a mixture of 34-s {sup 262}Ha and 27-s {sup 263}Ha produced in the{sup 249}Bk({sup 18}O,5n) and {sup 249}Bk({sup 18}O,4n) reactions at a beam energy of 99 MeV. The Ha isotopes were detected by measuring the spontaneous fission and {alpha}-activities associated with their decay, and the {alpha}-decays of their daughters, 4-s {sup 258}Lr, and 6-s {sup 259}Lr. Time-correlated pairs of parent and daughter {alpha}-particles were also registered. {sup 262,} {sup 263}Ha was absorbed on the TIOA columns from either 12 M HCl/0.01 M HF or 10 M HCl, and was subsequently eluted in 0.5 M HCl/0.01 M HF like its homolog niobium, and the pseudohomolog protactinium, and unlike the closest homolog, tantalum, which remains in the amine phase under these conditions. The effluent was divided into an early Pa fraction and a subsequent Nb fraction. By varying the cut between the Pa fraction and the Nb fraction in rough steps, it was shown that the elution of element 105 occurs closer to the
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Zimmermann, H P;
Gober, M K;
Kratz, J V;
[1]
Schaedel, M;
Bruechle, W;
Schimpf, E;
[2]
Gregorich, K E;
Tuerler, A;
Czerwinski, K R;
Hannink, N J;
Kadkhodayan, B;
Lee, D M;
Nurmia, M J;
Hoffmann, D C;
[3]
Gaeggeler, H;
Jost, D;
Kovacs, J;
Scherer, U W;
Weber, A
[4]
- Mainz Univ. (Germany). Inst. fuer Kernchemie
- Gesellschaft fuer Schwerionenforschung mbH, Darmstadt (Germany)
- Lawrence Berkeley Lab., CA (United States)
- Paul Scherrer Inst. (PSI), Villigen (Switzerland)
Citation Formats
Zimmermann, H P, Gober, M K, Kratz, J V, Schaedel, M, Bruechle, W, Schimpf, E, Gregorich, K E, Tuerler, A, Czerwinski, K R, Hannink, N J, Kadkhodayan, B, Lee, D M, Nurmia, M J, Hoffmann, D C, Gaeggeler, H, Jost, D, Kovacs, J, Scherer, U W, and Weber, A.
Chemical properties of element 105 in aqueous solution: Back extraction from triisooctyl amine into 0.5 m HCl.
Germany: N. p.,
1992.
Web.
Zimmermann, H P, Gober, M K, Kratz, J V, Schaedel, M, Bruechle, W, Schimpf, E, Gregorich, K E, Tuerler, A, Czerwinski, K R, Hannink, N J, Kadkhodayan, B, Lee, D M, Nurmia, M J, Hoffmann, D C, Gaeggeler, H, Jost, D, Kovacs, J, Scherer, U W, & Weber, A.
Chemical properties of element 105 in aqueous solution: Back extraction from triisooctyl amine into 0.5 m HCl.
Germany.
Zimmermann, H P, Gober, M K, Kratz, J V, Schaedel, M, Bruechle, W, Schimpf, E, Gregorich, K E, Tuerler, A, Czerwinski, K R, Hannink, N J, Kadkhodayan, B, Lee, D M, Nurmia, M J, Hoffmann, D C, Gaeggeler, H, Jost, D, Kovacs, J, Scherer, U W, and Weber, A.
1992.
"Chemical properties of element 105 in aqueous solution: Back extraction from triisooctyl amine into 0.5 m HCl."
Germany.
@misc{etde_10151225,
title = {Chemical properties of element 105 in aqueous solution: Back extraction from triisooctyl amine into 0.5 m HCl}
author = {Zimmermann, H P, Gober, M K, Kratz, J V, Schaedel, M, Bruechle, W, Schimpf, E, Gregorich, K E, Tuerler, A, Czerwinski, K R, Hannink, N J, Kadkhodayan, B, Lee, D M, Nurmia, M J, Hoffmann, D C, Gaeggeler, H, Jost, D, Kovacs, J, Scherer, U W, and Weber, A}
abstractNote = {Previous studies of the halide complex formation of element 105 and its anion exchange with triisooctyl amine (TIOA) were continued. The experiments were performed on a one-minute time scale with the computer-controlled liquid chromatography system ARCA II on a mixture of 34-s {sup 262}Ha and 27-s {sup 263}Ha produced in the{sup 249}Bk({sup 18}O,5n) and {sup 249}Bk({sup 18}O,4n) reactions at a beam energy of 99 MeV. The Ha isotopes were detected by measuring the spontaneous fission and {alpha}-activities associated with their decay, and the {alpha}-decays of their daughters, 4-s {sup 258}Lr, and 6-s {sup 259}Lr. Time-correlated pairs of parent and daughter {alpha}-particles were also registered. {sup 262,} {sup 263}Ha was absorbed on the TIOA columns from either 12 M HCl/0.01 M HF or 10 M HCl, and was subsequently eluted in 0.5 M HCl/0.01 M HF like its homolog niobium, and the pseudohomolog protactinium, and unlike the closest homolog, tantalum, which remains in the amine phase under these conditions. The effluent was divided into an early Pa fraction and a subsequent Nb fraction. By varying the cut between the Pa fraction and the Nb fraction in rough steps, it was shown that the elution of element 105 occurs closer to the Pa elution position, i.e., earlier than the elution of Nb. These results confirm the non-tantalum like behaviour of element 105 in 0.5 M HCl/0.01 M HF, and corroborate previously suggested structural differences between the halide complexes of element 105, niobium, and protactinium, on the one hand, and those of tantalum on the other hand. (orig.).}
place = {Germany}
year = {1992}
month = {Apr}
}
title = {Chemical properties of element 105 in aqueous solution: Back extraction from triisooctyl amine into 0.5 m HCl}
author = {Zimmermann, H P, Gober, M K, Kratz, J V, Schaedel, M, Bruechle, W, Schimpf, E, Gregorich, K E, Tuerler, A, Czerwinski, K R, Hannink, N J, Kadkhodayan, B, Lee, D M, Nurmia, M J, Hoffmann, D C, Gaeggeler, H, Jost, D, Kovacs, J, Scherer, U W, and Weber, A}
abstractNote = {Previous studies of the halide complex formation of element 105 and its anion exchange with triisooctyl amine (TIOA) were continued. The experiments were performed on a one-minute time scale with the computer-controlled liquid chromatography system ARCA II on a mixture of 34-s {sup 262}Ha and 27-s {sup 263}Ha produced in the{sup 249}Bk({sup 18}O,5n) and {sup 249}Bk({sup 18}O,4n) reactions at a beam energy of 99 MeV. The Ha isotopes were detected by measuring the spontaneous fission and {alpha}-activities associated with their decay, and the {alpha}-decays of their daughters, 4-s {sup 258}Lr, and 6-s {sup 259}Lr. Time-correlated pairs of parent and daughter {alpha}-particles were also registered. {sup 262,} {sup 263}Ha was absorbed on the TIOA columns from either 12 M HCl/0.01 M HF or 10 M HCl, and was subsequently eluted in 0.5 M HCl/0.01 M HF like its homolog niobium, and the pseudohomolog protactinium, and unlike the closest homolog, tantalum, which remains in the amine phase under these conditions. The effluent was divided into an early Pa fraction and a subsequent Nb fraction. By varying the cut between the Pa fraction and the Nb fraction in rough steps, it was shown that the elution of element 105 occurs closer to the Pa elution position, i.e., earlier than the elution of Nb. These results confirm the non-tantalum like behaviour of element 105 in 0.5 M HCl/0.01 M HF, and corroborate previously suggested structural differences between the halide complexes of element 105, niobium, and protactinium, on the one hand, and those of tantalum on the other hand. (orig.).}
place = {Germany}
year = {1992}
month = {Apr}
}