Nuclear Structure Studies near 208Pb and γ-ray Imaging Techniques

Natasa Lalovic

Nuclear Structure Studies near 208Pb and γ-ray Imaging Techniques

Natasa Lalovic

Nuclear physics

Research output: Thesis › Doctoral Thesis (compilation)

674 Downloads (Pure)

Abstract

This thesis focuses on a high-resolution γ-ray spectroscopy experiment where the fragmenta- tion of a 208 Pb primary beam was used to populate even-mass nuclei around 208 Pb. It was conducted in 2012 using the Advanced GAmma-ray Tracking Array (AGATA) while it was placed at GSI Darmstadt, Germany. Projectile-like fragments were selected and identified with the GSI Fragment Separator. The final aim is to study the aforementioned nuclei via Cou- lomb excitation. Yet, preceding measurements with stopped beams are necessary for reasons detailed here. Another part of this thesis is devoted to Research & Development (R&D) of position-sensitive scintillation detectors. These two different aspects are linked by studies of position sensitivity in devices utilized for detection of γ rays. Advances in γ-ray tracking algorithms are essential for both applied and basic nuclear physics. Here, the scintillation detector R&D is foreseen to contribute to applications in the realm of medical imaging as well as environmental and safety surveillance, whereas the basic research efforts yield improved nuclear structure information on heavy ions produced in relativistic fragmentation reactions. Paper I summarizes efforts regarding the image reconstruction algorithm when applied on a simulated data-set. In Paper II the performance of the AGATA sub-array is discussed, outlining the important aspects of the offline data processing and analysis. Paper III presents further treatment of the data partially scrutinized in Paper II using AGATA-tailored algorithms, assessing absolute efficiency and peak-to-total, and the performance of tracking algorithms with respect to different parameter-sets. Paper IV highlights an outstanding physics case from a stopped-beam AGATA measurement. In Paper V all aspects of the data analysis established in this thesis are described. The relevance of isomeric state measurements for both the experimental and theoretical aspect of relativistic fragmentation is emphasized.

Original language	English
Qualification	Doctor
Awarding Institution	Faculty of Science
Supervisors/Advisors	Rudolph, Dirk, Supervisor Golubev, Pavel, Supervisor
Award date	2017 Jun 21
Place of Publication	Lund
Publisher	Lund University, Faculty of Science, Department of Physics, Division of Nuclear Physics
ISBN (Print)	978-91-7753-287-3
ISBN (electronic)	978-91-7753-288-0
Publication status	Published - 2017 May

Bibliographical note

Defence details
Date: 2017-06-21
Time: 13:15
Place: Rydberg lecture hall, Department of Physics, Sölvegatan 14A, Lund
External reviewer
Name: Clark, Roderick M.
Title: Dr.
Affiliation: Lawrence Berkeley National Laboratory, Berkeley, CA, USA
---

Subject classification (UKÄ)

Natural Sciences
Subatomic Physics

Keywords

nuclear structure
gamma-ray spectroscopy
AGATA
isomeric decays
relativistic projectile fragmentation
Pb isotopes

Access to Document

NatasaLalovic_inklOmslag

2 Article
1 Book chapter
1 Paper in conference proceeding

Performance of the AGATA Gamma-ray Spectrometer in the PreSPEC Set-up at GSI
Lalovic, N., Louchart, C., Michelagnoli, C., Perez-Vidal, R. M., Ralet, D., Gerl, J., Rudolph, D., Arici, T., Bazzacco, D., Clement, E., Gadea, A., Kojouharov, I., Korichi, A., Labiche, M., Ljungvall, J., Lopez-Martens, A., Nyberg, J., Pietralla, N., Pietri, S., Stezowski, O., & 2 othersCollaboration, T. AGATA. & Collaboration, T. PPEC., 2016, In: Nuclear Instruments & Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment. 806, p. 258-266 9 p.
Research output: Contribution to journal › Article › peer-review

File
246 Downloads (Pure)
Role of the Δ Resonance in the Population of a Four-Nucleon State in the 56Fe → 54Fe Reaction at Relativistic Energies
Podolyák, Z., Shand, C. M., Lalovic, N., Gerl, J., Rudolph, D., Alexander, T., Boutachkov, P., Cortés, M. L., Górska, M., Kojouharov, I., Kurz, N., Louchart, C., Merchán, E., Michelagnoli, C., Pérez-Vidal, R. M., Pietri, S., Ralet, D., Reese, M., Schaffner, H., Stahl, C., & 45 othersWeick, H., Ameil, F., De Angelis, G., Arici, T., Carroll, R., Dombrádi, Z., Gadea, A., Golubev, P., Lettmann, M., Lizarazo, C., Mahboub, D., Pai, H., Patel, Z., Pietralla, N., Regan, P. H., Sarmiento, L. G., Wieland, O., Wilson, E., Birkenbach, B., Bruyneel, B., Burrows, I., Charles, L., Clément, E., Crespi, F. C. L., Cullen, D. M., Désesquelles, P., Eberth, J., González, V., Habermann, T., Harkness-Brennan, L., Hess, H., Judson, D. S., Jungclaus, A., Korten, W., Labiche, M., Maj, A., Mengoni, D., Napoli, D. R., Pullia, A., Quintana, B., Rainovski, G., Reiter, P., Salsac, M. D., Sanchis, E. & Valiente Dóbon, J. J., 2016 Nov 23, In: Physical Review Letters. 117, 22, 5 p., 222302.
Research output: Contribution to journal › Article › peer-review

Open Access
File
209 Downloads (Pure)
Analysis of the Response of AGATA Detectors at GSI
Lalovic, N., Perez-Vidal, R. M., Louchart, C., Michelagnoli, C., Ralet, D., Arici, T., Bazzacco, D., Clement, E., Gadea, A., Gerl, J., Kojouharov, I., Korichi, A., Labiche, M., Ljungvall, J., Lopez-Martens, A., Nyberg, J., Pietralla, N., Pietri, S., Rudolph, D., Stezowski, O., & 1 othersCollaboration, T. AGATA., 2015, EPJ Web of Conferences. Schwengner, R. & Zuber, K. (eds.). EDP Sciences, Vol. 93. p. 07007 2 p.
Research output: Chapter in Book/Report/Conference proceeding › Paper in conference proceeding › peer-review

Open Access

1 Finished

Nuclear Structure Studies near 208Pb and gamma-ray Imaging Techniques
Lalovic, N., Rudolph, D. & Golubev, P.
The Royal Physiographic Society in Lund, Swedish Research Council
2013/04/01 → 2017/06/30
Project: Dissertation

Cite this

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title = "Nuclear Structure Studies near 208Pb and γ-ray Imaging Techniques",

abstract = "This thesis focuses on a high-resolution γ-ray spectroscopy experiment where the fragmenta- tion of a 208 Pb primary beam was used to populate even-mass nuclei around 208 Pb. It was conducted in 2012 using the Advanced GAmma-ray Tracking Array (AGATA) while it was placed at GSI Darmstadt, Germany. Projectile-like fragments were selected and identified with the GSI Fragment Separator. The final aim is to study the aforementioned nuclei via Cou- lomb excitation. Yet, preceding measurements with stopped beams are necessary for reasons detailed here. Another part of this thesis is devoted to Research & Development (R&D) of position-sensitive scintillation detectors. These two different aspects are linked by studies of position sensitivity in devices utilized for detection of γ rays. Advances in γ-ray tracking algorithms are essential for both applied and basic nuclear physics. Here, the scintillation detector R&D is foreseen to contribute to applications in the realm of medical imaging as well as environmental and safety surveillance, whereas the basic research efforts yield improved nuclear structure information on heavy ions produced in relativistic fragmentation reactions. Paper I summarizes efforts regarding the image reconstruction algorithm when applied on a simulated data-set. In Paper II the performance of the AGATA sub-array is discussed, outlining the important aspects of the offline data processing and analysis. Paper III presents further treatment of the data partially scrutinized in Paper II using AGATA-tailored algorithms, assessing absolute efficiency and peak-to-total, and the performance of tracking algorithms with respect to different parameter-sets. Paper IV highlights an outstanding physics case from a stopped-beam AGATA measurement. In Paper V all aspects of the data analysis established in this thesis are described. The relevance of isomeric state measurements for both the experimental and theoretical aspect of relativistic fragmentation is emphasized.",

keywords = "nuclear structure, gamma-Ray spectroscopy, AGATA, isomeric decays, relativistic projectile fragmentation, Pb isotopes, nuclear structure, gamma-ray spectroscopy, AGATA, isomeric decays, relativistic projectile fragmentation, Pb isotopes",

author = "Natasa Lalovic",

note = "Defence details Date: 2017-06-21 Time: 13:15 Place: Rydberg lecture hall, Department of Physics, S{\"o}lvegatan 14A, Lund External reviewer Name: Clark, Roderick M. Title: Dr. Affiliation: Lawrence Berkeley National Laboratory, Berkeley, CA, USA --- ",

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publisher = "Lund University, Faculty of Science, Department of Physics, Division of Nuclear Physics",

school = "Faculty of Science",

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T1 - Nuclear Structure Studies near 208Pb and γ-ray Imaging Techniques

AU - Lalovic, Natasa

N1 - Defence details Date: 2017-06-21 Time: 13:15 Place: Rydberg lecture hall, Department of Physics, Sölvegatan 14A, Lund External reviewer Name: Clark, Roderick M. Title: Dr. Affiliation: Lawrence Berkeley National Laboratory, Berkeley, CA, USA ---

PY - 2017/5

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N2 - This thesis focuses on a high-resolution γ-ray spectroscopy experiment where the fragmenta- tion of a 208 Pb primary beam was used to populate even-mass nuclei around 208 Pb. It was conducted in 2012 using the Advanced GAmma-ray Tracking Array (AGATA) while it was placed at GSI Darmstadt, Germany. Projectile-like fragments were selected and identified with the GSI Fragment Separator. The final aim is to study the aforementioned nuclei via Cou- lomb excitation. Yet, preceding measurements with stopped beams are necessary for reasons detailed here. Another part of this thesis is devoted to Research & Development (R&D) of position-sensitive scintillation detectors. These two different aspects are linked by studies of position sensitivity in devices utilized for detection of γ rays. Advances in γ-ray tracking algorithms are essential for both applied and basic nuclear physics. Here, the scintillation detector R&D is foreseen to contribute to applications in the realm of medical imaging as well as environmental and safety surveillance, whereas the basic research efforts yield improved nuclear structure information on heavy ions produced in relativistic fragmentation reactions. Paper I summarizes efforts regarding the image reconstruction algorithm when applied on a simulated data-set. In Paper II the performance of the AGATA sub-array is discussed, outlining the important aspects of the offline data processing and analysis. Paper III presents further treatment of the data partially scrutinized in Paper II using AGATA-tailored algorithms, assessing absolute efficiency and peak-to-total, and the performance of tracking algorithms with respect to different parameter-sets. Paper IV highlights an outstanding physics case from a stopped-beam AGATA measurement. In Paper V all aspects of the data analysis established in this thesis are described. The relevance of isomeric state measurements for both the experimental and theoretical aspect of relativistic fragmentation is emphasized.

AB - This thesis focuses on a high-resolution γ-ray spectroscopy experiment where the fragmenta- tion of a 208 Pb primary beam was used to populate even-mass nuclei around 208 Pb. It was conducted in 2012 using the Advanced GAmma-ray Tracking Array (AGATA) while it was placed at GSI Darmstadt, Germany. Projectile-like fragments were selected and identified with the GSI Fragment Separator. The final aim is to study the aforementioned nuclei via Cou- lomb excitation. Yet, preceding measurements with stopped beams are necessary for reasons detailed here. Another part of this thesis is devoted to Research & Development (R&D) of position-sensitive scintillation detectors. These two different aspects are linked by studies of position sensitivity in devices utilized for detection of γ rays. Advances in γ-ray tracking algorithms are essential for both applied and basic nuclear physics. Here, the scintillation detector R&D is foreseen to contribute to applications in the realm of medical imaging as well as environmental and safety surveillance, whereas the basic research efforts yield improved nuclear structure information on heavy ions produced in relativistic fragmentation reactions. Paper I summarizes efforts regarding the image reconstruction algorithm when applied on a simulated data-set. In Paper II the performance of the AGATA sub-array is discussed, outlining the important aspects of the offline data processing and analysis. Paper III presents further treatment of the data partially scrutinized in Paper II using AGATA-tailored algorithms, assessing absolute efficiency and peak-to-total, and the performance of tracking algorithms with respect to different parameter-sets. Paper IV highlights an outstanding physics case from a stopped-beam AGATA measurement. In Paper V all aspects of the data analysis established in this thesis are described. The relevance of isomeric state measurements for both the experimental and theoretical aspect of relativistic fragmentation is emphasized.

KW - nuclear structure

KW - gamma-Ray spectroscopy

KW - AGATA

KW - isomeric decays

KW - relativistic projectile fragmentation

KW - Pb isotopes

KW - nuclear structure

KW - gamma-ray spectroscopy

KW - AGATA

KW - isomeric decays

KW - relativistic projectile fragmentation

KW - Pb isotopes

M3 - Doctoral Thesis (compilation)

SN - 978-91-7753-287-3

PB - Lund University, Faculty of Science, Department of Physics, Division of Nuclear Physics

CY - Lund

ER -

Nuclear Structure Studies near 208Pb and γ-ray Imaging Techniques

Abstract

Bibliographical note

Subject classification (UKÄ)

Keywords

Access to Document

Fingerprint

Research output

Performance of the AGATA Gamma-ray Spectrometer in the PreSPEC Set-up at GSI

Role of the Δ Resonance in the Population of a Four-Nucleon State in the 56Fe → 54Fe Reaction at Relativistic Energies

Analysis of the Response of AGATA Detectors at GSI

Projects

Nuclear Structure Studies near 208Pb and gamma-ray Imaging Techniques

Cite this