Academic literature on the topic 'Zyklotron'

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Dissertations / Theses on the topic "Zyklotron"

1

Guratzsch, Hartmut. "41 Jahre Betrieb des Rossendorfer Zyklotrons U-120: Eine Bildersammlung." Forschungszentrum Rossendorf, 2000. https://hzdr.qucosa.de/id/qucosa%3A22135.

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Das Rossendorfer Zyklotron ist ein \"klassisches\" Zyklotron mit 120 cm Polschuhdurchmesser. Als klassisches Zyklotron verfügt es über ein rotationssymmetrisches Magnetfeld. Mit der in radialer Richtung abfallenden Magnetfeldstärke wir die \"weiche\" Fokussierung erreicht. Zunächst wurde das zyklotron für die kernphysikalische Grundlagenforschung genutzt. Später überwogen die Herstellung von Radionukliden, die Neutronenerzeugung für medizinische und radiochemische Anwendungen sowie spezielle Dünnschichtaktivierungen für die Verschleißforschung. Die Betriebszeit des Zyklotrons erstreckte sich ü
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2

Guratzsch, Hartmut. "40 Jahre Rossendorfer Zyklotron U-120." Forschungszentrum Dresden, 2010. http://nbn-resolving.de/urn:nbn:de:bsz:d120-qucosa-30639.

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3

Guratzsch, Hartmut. "40 Jahre Rossendorfer Zyklotron U-120." Forschungszentrum Rossendorf, 1998. https://hzdr.qucosa.de/id/qucosa%3A21890.

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4

Guratzsch, Hartmut, Hans-Wolf Thümmel, and Rodolf Brückner. "Technologie zur Aktivierung gepreßter Targetmaterialien mit dem Protonenstrahl (12 MeV, 10 µA) des Zyklotrons U-120." Forschungszentrum Rossendorf, 1999. https://hzdr.qucosa.de/id/qucosa%3A21855.

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Es wird eine Technologie für die Aktivierung von gepreßten Pulver-Materialien (bis 500 mg) in einem Protonenstrom (10 µA) beschrieben. Das Verfahren wurde für die Herstellung von 94mTc am Rossendorfer Zyklotron U-120 aus angereichertem 94MoO3-Pulver optimiert. Die Bestrahlung des gepreßten Targetmaterials erfolgt in einem evakuierten und drucküberwachten Targetträger mit dünnem Strahleintrittsfenster. Durch die gute Wärmekopplung des Preßlings mit dem wassergekühlten Targetträger und der heli-umgekühlten Fensterfolie kann das Targetmaterial mit einer absorbierten Strahllei-stung bis zu 40 W be
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Manger, Matthias. "Spektroskopie kollektiver Zyklotron- und Intersubband-Resonanzen von Quanten-Hall-Systemen in GaAs." Doctoral thesis, kostenfrei, 2008. http://www.opus-bayern.de/uni-wuerzburg/volltexte/2009/3768/.

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Runkel, Steffen. "Teilchendynamik in EZR-Plasmen Untersuchungen von grundlegenden Prozessen in Elektron-Zyklotron-Resonanz-Ionenquellen /." [S.l. : s.n.], 2000. http://deposit.ddb.de/cgi-bin/dokserv?idn=961465174.

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7

Playle, D. D. "New control systems for aging SIEMENS cyclotrons." Helmholtz-Zentrum Dresden - Rossendorf, 2015. http://nbn-resolving.de/urn:nbn:de:bsz:d120-qucosa-164961.

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Introduction When properly maintained, cyclotrons often remain in operation for 20 years and more. However, as the years pass the control systems in particular become challenging to support. The I/O cards and other hardware eventually become obsolete, making spare parts difficult or even impossible to find. And the knowledge and ability to reload and configure the software also gets lost as operating systems and media storage technology change. This obsolescence is true of the Siemens RDS-112 cyclotron, which is controlled using a 486 computer, connected to an external STD card rack containing
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8

Hoehr, C., C. Hendriks, T. Uittenbosch, et al. "Real-time beam-profile monitor for a medical cyclotron." Helmholtz-Zentrum Dresden - Rossendorf, 2015. http://nbn-resolving.de/urn:nbn:de:bsz:d120-qucosa-163240.

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Introduction Measuring the beam profile on a medical cyclo-tron in real time can aid in improved tuning of the cyclotron and give important information for a smooth operation. Typically the beam profile is measured by an autoradiography technique or even by a scintillator that can be viewed in real time [1, 2]. Another method is to use collimators in front of the target to assess the beam center-ing [3]. All these methods have potential draw-backs including; an inability to monitor the beam in real time for the radiograph, exhibiting a non-linear correlation in signal response to the power de
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Janiak, T., I. Cieszykowska, T. Barcikowski, K. Jerzyk, and M. Mielcarski. "Preparation of metallic target of 100Mo for production of 99mTc in cyclotron." Helmholtz-Zentrum Dresden - Rossendorf, 2015. http://nbn-resolving.de/urn:nbn:de:bsz:d120-qucosa-164572.

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Introduction Technetium-99m, the daughter of 99Mo is the most commonly used radioisotope in nuclear medicine [1–2]. Current global crisis of 99Mo supply, aging of nuclear reactors and staggering costs force the search for alternative sources of 99mTc. Radioisotope Centre POLATOM joined the IAEA Coordinated Research Project on “Accelerator-based Alternatives to Non-HEU Production of 99Mo/99mTc”. The planned outcome of this project is development of 99mTc production method using the reaction of 100Mo(p,2n)99mTc [3] in Polish cyclotron. This work presents the results concerning preparation of 10
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10

Vandehey, N. T., and J. P. O\'Neil. "Automated stopcock actuator." Helmholtz-Zentrum Dresden - Rossendorf, 2015. http://nbn-resolving.de/urn:nbn:de:bsz:d120-qucosa-166258.

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Introduction We have developed a low-cost stopcock valve actuator for radiochemistry automation built using a stepper motor and an Arduino, an open-source single-board microcontroller. The con-troller hardware can be programmed to run by serial communication or via two 5–24 V digital lines for simple integration into any automation control system. This valve actuator allows for automated use of a single, disposable stopcock, providing a number of advantages over stopcock manifold systems available on many commercial radiochemistry rigs or over using solenoid valves. This actuator allows for t
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