γ -spectroscopy group
Laboratori Nazionali di Legnaro
The Gamma Spectroscopy group performs nuclear structure studies using stable beams provided by the PIAVE-ALPI-TANDEM accelerators of Legnaro National Laboratory, and high-resolution Ge arrays coupled to different ancillary detectors. The group works in close collaboration with the "Galileo Galilei" physics department of the University of Padova and INFN-Padova. Furthermore, the group belongs to the GAMMA collaboration for nuclear physics. This collaboration is part of the INFN - National Scientific Committee 3 (CSN3) initiative, which involves 5 INFN divisions: INFN - Laboratori Nazionali di Legnaro (LNL), INFN - Sezione di Firenze (FI), INFN - Sezione di Milano (MI), INFN - Sezione di Padova (PD), and the University of Camerino .
The group is also involved with SPES , which is a next generation ISOL-type accelerator that together with the operation of existing machines, is the future of LNL. SPES will provide Radioactive Ion Beam for nuclear physics and astrophysics research, as well as for interdisciplinary applications.
Currently, the GALILEO array is being employed to detect γ radiation emitted after reactions such as fusion-evaporation, and low-energy Coulomb excitation. At the moment, preparations are being made to host the AGATA array in 2022. You can find more information on the installation of AGATA@LNL below
The physics program of the group includes the following topics:
- Shell structure in n-rich nuclei
- Isospin symmetries and n-p pairing
- Pigmy resonance of interest in astrophysics
- Structure of nuclei at the proton-drip line
- Critical points and phase transitions between different nuclear shapes
In addition to the local activities, the group also performs research in collaboration with different laboratories such as GANIL , ISOLDE, JYU, the RIKEN Nishina Center , and GSI which is at the moment evolving into FAIR .
AGATA@LNL
AGATA, for advanced gamma tracking array, is a highly segmented High Purity Germanium (HPGe) detector array. It is a European collaboration project funded by twelve countries in Europe. The project was proposed in 2001 and in 2002 it was signed by the participant countries. AGATA is capable of high counting event rates and can be coupled with ancillary detectors, such as magnetic spectrometers, fast-timing detectors charged particles or neutron detectors.
The AGATA detectors are Ge-detectors that are 36-fold segment with six-fold azimuthal and six-fold longitudinal segmentation.
The installation of the AGATA array at the Legnaro Laboratories is ongoing and the commissioning experiment will take place at the end of April!
- The honeycomb in more populated, update of 17/10/2022
- Three triple clusters have been mounted and aligned to the structure
- The honeycomb structure has been coupled to PRISMA
GALILEO
GALILEO (Gamma Array of Legnaro INFN Laboratories for nuclEar spectrOscopy) is the current high-resolution Ge array for advanced in-beam γ-ray spectroscopy studies constructed and installed at LNL.
The first phase of GALILEO was operational between 2015 and 2019 and consisted of 25 GASP tapered detectors coupled to Neutron Wall as shown in the picure. In a second stage of this phase, 10 GASP detectors were moved to the forward angles (replacing Neutron Wall) and LaBr3 detectors were mounted at 90° to optimize the setup for measurements using the Plunger.
In its second phase, GALILEO will consist of 25 GASP tapered detectors at 90° and forward angles, and 10 triple clusters built using capsules of EUROBALL, mounted at backward angles. At the moment 20 GASP detectors and one triple cluster are mounted in the structure. Keep updated on the progress of the array following the latest news.
The HPGe detectors are surrounded by anti-Compton shields in order to reach, for the whole array, a peak-to-total ratio of about 55%. A 5 cm thick heavy-metal shield improves Compton rejection, avoiding direct γ-ray interactions in the BGO shields. The geometry of the array is designed to maximize the photo-peak efficiency under typical in-beam medium-high γ-ray multiplicity conditions, achieving a value of 6.4%. GALILEO can be coupled to different ancillary devices.
Check out the list of GALILEO physics publications , or take a look at some of the technical publications . You can also see previous thesis regarding GALILEO or its ancillary devices.
A full list of the experiments approved and performed with GALILEO can be found here
Ancillary devices.
Some of the ancillary devices which can be coupled to GALILEO (and AGATA) are:
- A dedicated Plunger device for lifetime measurements with GALILEO.
- EUCLIDES: A highly-efficient light-charged-particle detector
- SPIDER: A Silicon PIe DEtectoR for low-energy Coulomb-excitation measurements
- TRACE: A pixel-type Si TRacking Array for light Charged particle Ejectiles
- LaBr3 detectors
- NEDA: A NEutron Detector Array
- Neutron Wall: The EUROBALL neutron wall
- The Recoil Filter Detector (RFD)
Events.
19-21 April 2023: |
pre-PAC workshop of AGATA@LNL |
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Webpage |
11-12 April 2022: |
Nuclear Physics Mid Term Plan in Italy: Session LNL |
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Webpage |
10-12 November 2021: |
AGATA collaboration meeting 2021 |
|
Webpage |
8-10 November 2021: |
pre-PAC workshop of AGATA@LNL |
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Webpage |
News.
31 March 2022: |
C. Delafosse, A. Goasduff, A. Kankainen et al. |
|
First trap-assisted decay spectroscopy of the 81Ge ground state |
|
European Physics Journal (2022) |
8 March 2022: |
A. Badalà, M. La Cognata, R. Nania et al. |
|
Trends in particle and nuclei identification techniques in nuclear physics experiments |
|
Riv. Nuovo Cim. (2022) |
30 July 2020: |
Installation of the first new triple cluster detector from GALILEO |
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The first new triple detector from GALILEO was mounted with its anti-Compton shield.
The detector is composed of three hyper-pure Germanium crystals installed inside a single cryostat specially developed for GALILEO.
The installation of other detectors is scheduled for autumn 2020 and will allow to increase the detection efficiency of the array. |
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28 July 2020: |
A. Gottardo, G. de Angelis, P. Doornenbal, et al. |
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Transition strengths in the neutron-rich 73,74,75Ni isotopes |
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Phys. Rev. C 102, 014323 (2020) |
22 July 2020: |
M. Siciliano, I. Zanon, A. Goasduff, et al. |
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Shape coexistence in neutron-deficient 188Hg investigated via lifetime measurements |
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Phys. Rev. C 102, 014318 (2020) |
Staff:
Giacomo de Angelis
giacomo.deangelis @
lnl.infn.it
Researcher
INFN-LNL
Alain Goasduff
alain.goasduff @
lnl.infn.it
Researcher
INFN-LNL
Daniel R. Napoli
napoli @
lnl.infn.it
Researcher
INFN-LNL
Andrea Gottardo
andrea.gottardo @
lnl.infn.it
Researcher
INFN-LNL
Jose Javier Valiente Dobon
javier.valiente @
lnl.infn.it
Researcher
INFN-LNL
Franco Galtarossa
franco.galtarossa @
lnl.infn.it
Postdoc
University of Padova
Silvia Lenzi
silvia.lenzi @
pd.infn.it
Professor
University of Padova
Roberto Menegazzo
roberto.menegazzo @
pd.infn.it
Researcher
INFN-Padova
Daniele Mengoni
daniele.mengoni @
pd.infn.it
Professor
University of Padova
Francesco Recchia
francesco.recchia @
pd.infn.it
Researcher
University of Padova
Postdocs:
Pablo Aguilera Jorquera
pablo.aguilera @
pd.infn.it
Postdoc
University of Padova
Matus Balogh
matus.balogh @
lnl.infn.it
Postdoc
INFN-LNL
Jaime Benito
jaime.benito @
pd.infn.it
Postdoc
University of Padova
Daniele Brugnara
daniele.brugnara @
lnl.infn.it
Postdoc
INFN-LNL
Javier Collado
javier.collado @
lnl.infn.it
Postdoc
INFN-LNL
Aysegül Ertoprak
aysegul.ertoprak @
lnl.infn.it
Postdoc
INFN-LNL
Rafael Escudeiro
rafael.escudeiro @
pd.infn.it
Postdoc
University of Padova
Rosa Maria Pérez Vidal
perezvidal @
lnl.infn.it
Postdoc
INFN-LNL
Marta Polettini
marta.polettini @
pd.infn.it
Postdoc
INFN-PD
Kseniia Rezynkina
kseniia.rezynkina @
pd.infn.it
Postdoc
INFN-Padova
Matus Sedlak
matus.sedlak @
lnl.infn.it
Postdoc
INFN-LNL
Irene Zanon
irene.zanon @
lnl.infn.it
Postdoc
INFN-LNL
PhD students:
Filippo Angelini
filippo.angelini @
lnl.infn.it
Student
University of Padova
Supervisor: José Javier Valiente
Sara Carollo
sara.carollo @
studenti.unipd.it
Student
University of Padova
Supervisor: Francesco Recchia
Benito Gongora
benito.gongora @
lnl.infn.it
Student
University of Ferrara
Supervisors: José Javier Valiente, Tommaso Marchi
Julgen Pellumaj
julgen.pellumaj @
lnl.infn.it
Student
University of Ferrara
Supervisor: José Javier Valiente
Sara Pigliapoco
sara.pigliapoco @
studenti.unipd.it
Student
University of Padova
Supervisor: Francesco Recchia
Elia Pilotto
elia.pilotto @
pd.infn.it
Student
University of Padova
Supervisor: Daniele Mengoni
Luca Zago
luca.zago.1 @
studenti.unipd.it
Student
University of Padova
Supervisor: José Javier Valiente
Former members:
Guangxin Zhang
Postdoc
University of Padova
Zhen Huang
PhD student
University of Padova
Jeongsu Ha
Postdoc
University of Padova
Martha Liliana Cortes
Postdoc
INFN-LNL
Giorgia Pasqualato
PhD student
University of Padova
Eleonora Gregor
Postdoc
INFN-LNL
Thesis projects
The group offers different thesis projects for bachelor, master and PhD thesis.
Below you can find some of the possible topics for your thesis. Contact the corresponding supervisor if you are interested!
- Bachelor thesis
- Lifetime measurements with plunger. Supervisor: Alain Goasduff
- Master thesis
- Test of Silicon detectors. Supervisor: Daniele Mengoni
Publications
Here you can find a list of:
- GALILEO physics publications
- High-spin intruder states in the mirror nuclei 31S and 31P.
D. Testov, A. Boso, S.M. Lenzi et al.
Phys. Rev. C 104, 024309 (2021)
- Pseudospin partner bands in 130Ba.
S. Guo, C. M. Petrache, D. Mengoni, et al.
Phys. Rev. C 102, 044320 (2020)
- Shape coexistence in neutron-deficient 188Hg investigated via lifetime measurements.
M. Siciliano, I. Zanon, A. Goasduff, et al.
Phys. Rev. C 102, 014318 (2020)
- Evidence for pseudospin-chiral quartet bands in the presence of octupole correlations.
S.Guo, C.M.Petrache, D.Mengoni, et al.
Phys. Lett. B 807, 135572 (2020)
- New level scheme and shell model description of 212Rn.
C. B. Li, G. L. Zhang, C. X. Yuan, et al.
Phys. Rev. C 101, 044313(2020)
- Identification of high-K rotation in 130Ba: Testing the consistency of electromagnetic observables.
Y. H. Qiang, C. M. Petrache, S. Guo, et al.
Phys. Rev. C 99, 014307 (2019)
- Diversity of shapes and rotations in the γ-soft 130Ba nucleus: First observation of a t-band in the A= 130 mass region.
C. M. Petrache, P. M. Walker, S.Guo, et al.
Phys. Lett. B 795, 241 (2019)
- One-neutron stripping processes to excited states of 90Y* in the 89Y(6Li,5Li)90Y*reaction.
G. L. Zhang, G. X. Zhang, S. P. Hu, et al.
Phys. Rev. C 97, 014611 (2018)
- GALILEO and ancillaries technical publications
- The GALILEO γ-ray array at Legnaro National Laboratories.
A. Goasduff, D. Mengoni, F. Recchia, J.J. Valiente-Dobon, et al.
Nucl. Instrum. Methods. Phys. Res. A 1015, 165753 (2021)
#galileo
- Lifetime measurements using a plunger device and the EUCLIDES Si array at the GALILEO γ-ray spectrometer.
J. Bradbury, D. Testov, S. Bakes, et al.
Nucl. Instrum. Methods. Phys. Res. A 979, 164345 (2020)
#plunger #euclides
- SPIDER: A Silicon PIe DEtectoR for low-energy Coulomb-excitation measurements.
M. Rocchini, K. Hadynska-Klek, A. Nannini, et al.
Nucl. Instrum. Methods. Phys. Res. A 971, 164030 (2020)
#spider
- The 4π highly-efficient light-charged-particle detector EUCLIDES, installed at the GALILEO array for in-beam γ-ray spectroscopy.
D. Testov, D. Mengoni, A. Goasduff, et al.
Eur. Phys. J. A 55, 47 (2019)
#euclides
- NEDA ‐ NEutron Detector Array.
J. J. Valiente-Dobón, G. Jaworski, A. Goasduff, et al.
Nucl. Instrum. Methods. Phys. Res. A 927, 81 (2019)
#neda
- A new dedicated plunger device for the GALILEO γ-ray detector array.
C. Müller-Gatermann, F. von Spee, A. Goasduff, et al.
Nucl. Instrum. Methods. Phys. Res. A 920, 95 (2019)
#plunger
- Neutron detection and γ-ray suppression using artificial neural networks with the liquid scintillators BC-501A and BC-537.
P. -A. Söderström, G. Jaworski, J. J. Valiente Dobón, et al.
Nucl. Instrum. Methods. Phys. Res. A 916, 238 (2019)
#neda
- A powerful combination measurement for exploring the fusion reaction mechanisms induced by weakly bound nuclei.
S. P. Hu, G. L. Zhang, G. X. Zhang, et al.
Nucl. Instrum. Methods. Phys. Res. A 914, 64 (2019)
#plunger #euclides
- Towards the lowest-energy limit for light ions identification with silicon pixel-type detectors.
N. Cieplicka-Oryńczak, D. Mengoni, M. Ciemala, et al.
Eur. Phys. J. A 54, 29 (2018)
#trace
- Pulse pile-up identification and reconstruction for liquid scintillator based neutron detectors.
X. L. Luo, V. Modamio, J. Nybergb, et al.
Nucl. Instrum. Methods. Phys. Res. A 897, 59 (2018)
#neda
- Digital pulse-timing technique for the neutron detector array NEDA.
V. Modamio, J. J. Valiente-Dobón, G. Jaworski, et al.
Nucl. Instrum. Methods. Phys. Res. A 775, 71 (2015)
#neda
- Test of digital neutron ‐ gamma discrimination with four different photomultiplier tubes for the NEutron Detector Array (NEDA).
X. L. Luo, V. Modamio, J. Nyberg, et al.
Nucl. Instrum. Methods. Phys. Res. A 767, 83 (2014)
#neda
- Digital pulse-shape analysis with a TRACE early silicon prototype.
D. Mengoni, J. A. Dueñas, M. Assié, et al.
Nucl. Instrum. Methods. Phys. Res. A 764, 241 (2014)
#trace
- Characterization of large volume 3.5"x8" LaBr3:Ce detectors.
A. Giaz, L. Pellegri, S. Riboldia, et al.
Nucl. Instrum. Methods. Phys. Res. A 729, 910 (2013)
#labr
- Monte Carlo simulation of a single detector unit for the neutron detector array NEDA.
G. Jaworski, M. Palacz, J. Nyberg, et al.
Nucl. Instrum. Methods. Phys. Res. A 673, 64 (2012)
#neda
- Monte Carlo simulations of the Neutron Wall detector system.
J. Ljungvall, M. Palacz, and J. Nyberg
Nucl. Instrum. Methods. Phys. Res. A 528, 741 (2004)
#neutronwall
- The EUROBALL neutron wall ‐ design and performance tests of neutron detectors.
Ö. Skeppstedt, H. A. Roth, L. Lindström, et al.
Nucl. Instrum. Methods. Phys. Res. A 421, 531 (1999)
#neutronwall
- GALILEO and ancillaries thesis
Master thesis:
- Study of Shape Coexistence in the 188Hg nucleus via lifetime measurements.
Irene Zanon
Universita degli studi di Padova, 2017/2018
Relatore: Dr. Alain Goasduff
Correlatore: Dr. Marco Siciliano
- Test of a 3He target to be used for transfer reactions in inverse kinematics and study of the nuclear structure of 74Se.
Gabriele Carozzi
Universita degli studi di Padova, 2017/2018
Relatori: Dr. Daniele Mengoni, Dr. Jose Javier Valiente Dobon, Dr. Marco Siciliano
- Investigation of shape coexistence in 60Zn by using the γ-ray spectrometer GALILEO at the LNL.
Giorgia Pasqualato
Universita degli studi di Padova, 2016/2017
Relatore: Dr. Daniele Mengoni
Bachelor thesis:
- Characterization of highly-segmented silicon detectors for direct reactions with radioactive beams.
Riccardo Lombardi
Universita degli studi di Padova, 2019/2020
Relatore: Prof. Daniele Mengoni
Corelatore: Dr. Alain Goasduff
- Studi di struttura nucleare con lo spettrometro GALILEO.
Matilde Avesani
Universita degli studi di Padova, 2019/2020
Relatore: Prof. Silvia Lenzi
Corelatore: Dr. Dmitry Testov
- Nuclear Structure of 33S using the GALILEO γ-ray spectrometer.
Anita Candiello.
Universita degli studi di Padova, 2018/2019
Relatore: Prof. Silvia Lenzi.
Corelatore: Dr. Dmitry Testov.
- Lifetime measurements with fast-timing scintillators.
Marta Magalini
Universita degli studi di Padova, 2018/2019
Relatore: Prof. Daniele Mengoni
Correlatore: Dr. Andres Illana Sison, Dr. Alain Goasduff
- Ottimizzazione di TRACE, un array di rivelatori segmentati di silicio, per lo studio di reazioni di trasferimento a LNL.
Anna Braghetto
Universita degli studi di Padova, 2017/2018
Relatore: Dr. Alain Goasduff
Correlatore: Dr. Marco Siciliano
- Exploring the Pulse Shape Discrimination capabilities of the ΔE silicon detectors of the EUCLIDES array.
Giovanni Sighinolfi
Universita degli studi di Padova, 2017/2018
Relatore: Dr. Alain Goasduff
Correlatore: Dr. Marco Siciliano, Dr. Daniele Mengoni
- Characterization with digital electronics of a neutron detector for fast neutrons.
Andrea Raggio
Universita degli studi di Padova, 2016/2017
Relatori: : Dr. G. Jaworski, Dr. V. Modamio, Dr. J.J. Valiente-Dobón, Prof. D. Mengoni
- Other completed thesis
PhD thesis:
- Nuclear structure of the semi-magic tin isotopes close to 100Sn:lifetime measurements of low-lying states in 106Sn and 108Sn
Marco Siciliano
Universita degli studi di Padova, 2017
Supervisori: Dr. Jose Javier Valiente Dobon, Dr. Alain Goasduff
- Study of shape evolution in the neutron-rich osmium isotopes with the advanced gamma-tracking array AGATA
Philipp Rudolf John
Universita degli studi di Padova, 2015
Supervisori: Dr. Daniele Mengoni, Prof. Santo Lunardi, Dr. Jose Javier Valiente Dobon
Master thesis:
- Isomer decay spectroscopy of neutron-rich nuclei around A ∼ 210
Luca Zago
Universita degli studi di Padova, 2019/2020
Relatori: Dr. Jose Javier Valiente Dobon, Dr. Andrea Gottardo
- Isospin symmetry in the fp-shell mirror nuclei.
Sara Pigliapoco
Universita degli studi di Padova, 2019/2020
Relatore: Dr. Francesco Recchia
Correlatore: Dr. Martha Liliana Cortés
- Commissioning Experiment of the AGATA+MUGAST+VAMOS Setup for Direct Reaction Studies.
Andrea Raggio
Universita degli studi di Padova, 2019/2020
Relatore: Prof. Daniele Mengoni
Correlatore: Marlene Assie
- Perspectives on the measurement of competitive double gamma decay with the AGATA tracking arrays.
Daniele Brugnara
Universita degli studi di Padova, 2017/2018
Relatore: Dr. Jose Javier Valiente Dobon
Correlatore: Dr. Alain Goasduff
Bachelor thesis:
- Studio della struttura nucleare dello 62Zn con tecniche di spettroscopia gamma
Edoardo Fiesoli
Universita degli studi di Padova, 2020/2021
Relatore: Prof. Silvia Lenzi
- Spettroscopia gamma di nuclei ricchi di protoni con lo spettormetro gamma AGATA
Emma Raniero
Universita degli studi di Padova, 2020/2021
Relatore: Prof. Silvia Lenzi
- Spettroscopia gamma di nuclei ricchi di protoni con lo spettormetro gamma AGATA
Gianmarco Esposto
Universita degli studi di Padova, 2020/2021
Relatore: Prof. Silvia Lenzi
- Studio della struttura di nuclei rotazionali della shell f7/2 con il modello a shell interattivo
Alberto Cattelan
Universita degli studi di Padova, 2020/2021
Relatore: Prof. Silvia Lenzi
- Study of discrete symmetry in 21Ne.
Edoardo Buonocore
Universita degli studi di Padova, 2019/2020
Relatore: Dr. Daniele Mengoni
Correlatore: Prof. Lorenzo Fortunato
- Metodi radioattivi per los tudio della struttura nucleare in nuclei pesanti
Matteo Gambrioli
Universita degli studi di Padova, 2019/2020
Relatore: Prof. Silvia Lenzi
- Probabilita di transizione nei nuclei speculari 49Mn e 49Cr
Mirko Menni
Universita degli studi di Padova, 2019/2020
Relatore: Prof. Silvia Lenzi
- Metodo sperimentale per studiare nuclei con alone
Silvia Ziviani
Universita degli studi di Padova, 2019/2020
Relatore: Prof. Silvia Lenzi
- Struttura a cluster in nuclei leggeri
Anna Vigolo
Universita degli studi di Padova, 2019/2020
Relatore: Prof. Silvia Lenzi
- Utilizzo di ioni pesanti nella terapia oncologica
Elisabetta Campedelli
Universita degli studi di Padova, 2019/2020
Relatore: Prof. Silvia Lenzi
- Eccitazione Coulombiana di fasci di ioni radioattivi ad energie intermedia
Pietro Miglioranza
Universita degli studi di Padova, 2019/2020
Relatore: Prof. Silvia Lenzi
- Isospin Symmetry Breaking Effects on Mirror Nuclei 43Ti and 43Sc.
Francesco Gentile
Universita degli studi di Padova, 2018/2019
Relatore: Prof. Silvia Lenzi
- Differenze di energia di eccitazione tra stati analoghi in nuclei speculari di massa A= 30-40.
Martina Cottini
Universita degli studi di Padova, 2018/2019
Relatore: Prof. Silvia Lenzi
- Study heavy elements with exotic beams at ISOLDE (CERN).
Marco Bortolami
Universita degli studi di Padova, 2017/2018
Relatore: Dr. Jose Javier Valiente Dobon
Correlaore: Dr. Andres Illana Sison
- Studio della struttura dei nuclei 24Mg e 26Mg mediante spettroscopia gamma.
Mirco Del Fabbro
Universita degli studi di Padova, 2015/2016
Relatore: Dr. Francesco Recchina
Correlatore: Dr. Alberto Boso
Previous Arrays
The group has a well-established expertise in nuclear spectroscopy with high-resolution gamma-arrays. Since the first experiments performed in the 90s, the group has hosted GASP, EUROBALL, CLARA, as well as the first stage of the last-generation European gamma-array, the AGATA demonstrator.
Visiting LNL.
- If you would like to propose an experiment, check the Useful links section
- If you are planning to come to LNL for experiments or collaboration, you first need to register as LNL user. You can find some FAQ here
- If you would like to book the LNL- Guesthouse, follow this procedure
- You might also want to check:
Useful links
- Check for the call for proposals of other laboratories.
- Or review the history of gamma-ray spectroscopy by reading about gammapool, or some more information on the HP-Ge arrays previously hosted by LNL:
Internal
- Here you can find a list of tools and resources from INFN-LNL. Most of them require you to login with your INFN CCR-AAI credentials
Maintained by: Irene Zanon & Daniele Brugnara