Abrégé

Provided herein are methods and systems for extracting zirconium and/or other impurities from a strontium-containing mixture. A method for removing zirconium from a mixture including zirconium and strontium can include converting at least a portion of a Zr-containing precursor to ZrF4 in the mixture, converting at least a portion of a Sr-containing precursor to SrF2 in the mixture, solubilizing at least a portion of the ZrF4 and/or the SrF2 in a solvent to create a solution, and/or separating at least a portion of the solubilized ZrF4 and/or at least a portion of the solubilized SrF2 from the mixture.

Classes IPC  ?

• C01F 11/22 - Fluorures
• C01G 25/02 - Oxydes
• C01G 25/04 - Halogénures

Abrégé

42444 and/or at least a portion of the solubilized Srp2 from the mixture.

Classes IPC  ?

• C01G 25/04 - Halogénures
• C22B 34/10 - Obtention du titane, du zirconium ou du hafnium
• C22B 34/14 - Obtention du zirconium ou du hafnium

Abrégé

Provided herein is a method for fabricating a heat source for a radioisotope thermoelectric generator (RTG). The method may include reducing a particle size in a strontium compound by powdering and sieving the strontium compound and/or dissolving the strontium compound into an aqueous solution; mixing the strontium compound with graphite to obtain a strontium-graphite mixture; performing a press to the strontium-graphite mixture; and encapsulating the pressed strontium-graphite mixture into an x-ray shielding to obtain the heat source.

Classes IPC  ?

• G21G 4/06 - Sources radioactives autres que les sources de neutrons caractérisées par des aspects de leur structure
• G21H 1/10 - Cellules dans lesquelles le rayonnement chauffe une jonction thermo-électrique ou un convertisseur thermo-ionique

Abrégé

Provided herein is a method for fabricating a heat source for a radioisotope thermoelectric generator (RTG). The method may include reducing a particle size in a strontium compound by powdering and sieving the strontium compound and/or dissolving the strontium compound into an aqueous solution; mixing the strontium compound with graphite to obtain a strontium-graphite mixture; performing a press to the strontium-graphite mixture; and encapsulating the pressed strontium-graphite mixture into an x-ray shielding to obtain the heat source.

Classes IPC  ?

• G21H 1/10 - Cellules dans lesquelles le rayonnement chauffe une jonction thermo-électrique ou un convertisseur thermo-ionique
• G21G 4/06 - Sources radioactives autres que les sources de neutrons caractérisées par des aspects de leur structure

Abrégé

Provided herein is a method for fabricating a heat source for a radioisotope thermoelectric generator (RTG). The method may include reducing a particle size in a strontium compound by powdering and sieving the strontium compound and/or dissolving the strontium compound into an aqueous solution; mixing the strontium compound with graphite to obtain a strontium-graphite mixture; performing a press to the strontium-graphite mixture; and encapsulating the pressed strontium-graphite mixture into an x-ray shielding to obtain the heat source.

Classes IPC  ?

• G21G 4/04 - Sources radioactives autres que les sources de neutrons
• G21H 1/10 - Cellules dans lesquelles le rayonnement chauffe une jonction thermo-électrique ou un convertisseur thermo-ionique

Abrégé

Provided is a fuel design configured to have a thickness that is equal to or less than a mean-free path of electrons emitted by a radioactive energy source to prevent electrons produced thereby from being stopped within the fuel design and thus decreasing the intensity of bremsstrahlung radiation generated within the fuel design. Additionally provided is a two-phase shielding system (220) including a first shield (206) formed of a first material having a thickness exceeding a mean-free path of an electron emitted from a radioactive source material so as to prevent the electron from passing through the first shield, and a second shield (208) formed of a second material configured to prevent bremsstrahlung radiation generated by the electron from passing through the second shield.

Classes IPC  ?

• G21H 1/10 - Cellules dans lesquelles le rayonnement chauffe une jonction thermo-électrique ou un convertisseur thermo-ionique
• G21H 1/02 - Cellules directement chargées pour le rayonnement bêta
• G21F 1/02 - Sélection de matériaux de blindage uniforme
• G21G 4/06 - Sources radioactives autres que les sources de neutrons caractérisées par des aspects de leur structure

Abrégé

Provided is a fuel design configured to have a thickness that is equal to or less than a mean-free path of electrons emitted by a radioactive energy source to prevent electrons produced thereby from being stopped within the fuel design and thus decreasing the intensity of bremsstrahlung radiation generated within the fuel design. Additionally provided is a two-phase shielding system including a first shield formed of a first material having a thickness exceeding a mean-free path of an electron emitted from a radioactive source material so as to prevent the electron from passing through the first shield, and a second shield formed of a second material configured to prevent bremsstrahlung radiation generated by the electron from passing through the second shield.

Classes IPC  ?

• G21G 4/06 - Sources radioactives autres que les sources de neutrons caractérisées par des aspects de leur structure
• G21F 1/12 - Matériaux de blindage laminés
• G21H 1/10 - Cellules dans lesquelles le rayonnement chauffe une jonction thermo-électrique ou un convertisseur thermo-ionique

Abrégé

Provided is a fuel design configured to have a thickness that is equal to or less than a mean-free path of electrons emitted by a radioactive energy source to prevent electrons produced thereby from being stopped within the fuel design and thus preventing bremsstrahlung radiation from being generated within the fuel design. Additionally provided is a two-phase shielding system including a first shield formed of a first material having a thickness exceeding a mean- free path of an electron emitted from a radioactive source material so as to prevent the electron from passing through the first shield, and a second shield formed of a second material configured to prevent bremsstrahlung radiation generated by the electron from passing through the second shield.

Classes IPC  ?

• G21F 1/12 - Matériaux de blindage laminés
• G21H 1/00 - Dispositions pour obtenir de l'énergie électrique à partir de sources radioactives, p. ex. d'isotopes radioactifs

Abrégé

Provided is a fuel design configured to have a thickness that is equal to or less than a mean-free path of electrons emitted by a radioactive energy source to prevent electrons produced thereby from being stopped within the fuel design and thus preventing bremsstrahlung radiation from being generated within the fuel design. Additionally provided is a two-phase shielding system including a first shield formed of a first material having a thickness exceeding a mean- free path of an electron emitted from a radioactive source material so as to prevent the electron from passing through the first shield, and a second shield formed of a second material configured to prevent bremsstrahlung radiation generated by the electron from passing through the second shield.

Classes IPC  ?

• G21C 3/40 - Combinaison structurelle d'un élément combustible avec un élément thermo-électrique pour la production directe d'énergie électrique à partir de la chaleur de fission
• G21H 1/00 - Dispositions pour obtenir de l'énergie électrique à partir de sources radioactives, p. ex. d'isotopes radioactifs