Characterization and enhancement of the response of polyallyl-diglycol carbonate etched-track detectors for neutrons

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ATTIVITÀ FORMATIVE / FORMATIVE ACTIVITIES

I anno di corso / I course year (anno accademico / academic year 2015-2016) DENOMINAZIONE DEL CORSO / NAME OF THE COURSE DURATA / DURATION (in ore / in hours) SEDE / LOCATION (indicare Università o altra sede di svolgimento / indicate the university or other course location) DOCENTE / PROFESSOR (nome e cognome / name and family name) VOTAZIONE / FINAL MARK GIUDIZIO / EVALUATION LINGUA UTILIZZATA (italiano, inglese, altra lingua / Italian, English or other languages)

Corsi del dottorato frequentati/ Doctorate courses attended

Misure Nucleari 56 UNIPI Francesco d’Errico

English

Radioprotezione 53 UNIPI Francesco d’Errico

English

Altri corsi/ Other courses

Italian Course 40 UNIPI Annalisa Stefanini Italian Seminari di ricerca/Research seminars (argomento e ore di svolgimento / topic and number of hours carried out)

1. 2. …

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2 PERIODO DI SVOLGIMENTO (da ___ a ____ / a ___ to ___) ENTE OSPITANTE

(nome, luogo ed eventuale supervisore / name, location

and subsequent supervisor)

ATTIVITÀ SVOLTE E RISULTATI ACTIVITIES CARRIED OUT AND RESULTS

Esperienze di ricerca presso altre strutture / Research experience in other institutions Attività o borse all’estero/Training or Scholarship abroad

II anno di corso / II course year (anno accademico / academic year ________________) DENOMINAZIONE DEL CORSO / NAME OF THE COURSE DURATA / DURATION (in ore / in hours) SEDE / LOCATION (indicare Università o altra sede di svolgimento / indicate the university or other course location) DOCENTE / PROFESSOR (nome e cognome / name and family name) VOTAZIONE / FINAL MARK GIUDIZIO / EVALUATION LINGUA UTILIZZATA (italiano, inglese, altra lingua / Italian, English or other languages)

Corsi del Dottorato frequentati/ Doctorate Courses Attended

Altri corsi/ Other Courses Seminari di ricerca/Research Seminars (argomento e ore di svolgimento / topic and number of hours carried out) 1. 2. … PERIODO DI SVOLGIMENTO (da ___ a ____ / a ___ to ___) ENTE OSPITANTE

Esperienze di ricerca presso altre strutture / Research experience in other institutions Attività o borse all’estero/Training or Scholarship abroad

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3 III anno di corso / III course year (anno accademico / academic year ________________)

DENOMINAZIONE DEL CORSO / NAME OF THE COURSE DURATA / DURATION (in ore / in hours) SEDE / LOCATION (indicare Università o altra sede di svolgimento / indicate the university or other course location) DOCENTE / PROFESSOR (nome e cognome / name and family name) VOTAZIONE / FINAL MARK GIUDIZIO / EVALUATION LINGUA UTILIZZATA (italiano, inglese, altra lingua / Italian, English or other languages)

Corsi del Dottorato frequentati/ Doctorate Courses Attended

Altri corsi/ Other Courses

Management of nuclear events and radiological scenarios 40 Tor Vergata University Full module with various professors 30 English Seminari di ricerca/Research Seminars (argomento e ore di svolgimento / topic and number of hours carried out) 1. 2. … PERIODO DI SVOLGIMENTO (da ___ a ____ / a ___ to ___) ENTE OSPITANTE

Esperienze di ricerca presso altre strutture / Research experience in other institutions Attività o borse all’estero/Training or Scholarship abroad PERIODO DI SVOLGIMENTO (da ___ a ____) ENTE OSPITANTE (nome, luogo e eventuale supervisore)

ATTIVITÀ SVOLTE E RISULTATI

Esperienze di ricerca presso altre strutture / Research experience in other institutions Attività o borse

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4 all’estero /

Training or Scholarship/s abroad

TITOLO DELLA TESI / PHD THESIS TITLE

Characterization and enhancement of the response of polyallyl-diglycol carbonate etched-track detectors for neutrons

SETTORE SCIENTIFICO DISCIPLINARE (SSD)/ Scientific Area Framework Nuclear Engineering

PROGETTO DI RICERCA/RESEARCH PROJECT (descrivere sinteticamente / please provide a short

description)

This thesis is based on the analysis of nuclear track detectors (NTD), in particular,

detectors of polyallyl-diglycol carbonate (PADC), i.e. CR-39, which are polymers widely

used for the detection of ionizing radiation and neutron dosimetry. Basically, energetic

recoil particles from neutron interactions collide with the polymer structure and leave a trail

of broken chemical bonds within the material. When immersed in a concentrated caustic

solution (such as sodium or potassium hydroxide) hydroxide ions attack and erode the

polymer structure, etching away the bulk of the plastic. However, along the trails of

damage left by charged particles, the polymer is attacked more rapidly than in the bulk,

revealing the tracks of the charged particles. The number of tracks is proportional to the

absorbed dose.

Recent striking advances and general availability of computing and imaging technologies have benefited etched-track detectors, permitting investigations of track parameters with

extraordinary ease and power. However, there are still shortcomings to be addressed, such as: significant angular dependence; a somewhat limited sensitivity; and the under-response to certain types of neutron spectra, such as low-energy neutrons from reactors or high-energy accelerator-produced neutrons. All these issues can be tackled by enhancing the tracks, which can be most efficiently achieved by pre-etching treatments. Therefore, in this thesis we intend to investigate different types of pre-etching treatments and propose an optimum procedure to increase the detectors’ sensitivity at all energies. This would facilitate the determination of the tracks’ geometric parameters, allowing improved dosimetric assessments and neutron spectrometry.

CONVEGNI, WORKSHOP E SEMINARI IN ITALIA E ALL’ESTERO/ CONFERENCES, WORKSHOPS,

SEMINARSATTENDED IN ITALY AND ABROAD (indicare denominazione, sede, data e se la

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partecipazione ha previsto anche la presentazione di un contributo / please provide the name, the

location, the date and whether the participation included also the presentation of a contribution)

- 2nd_{ESNII plus Summer School: “The challenges of the future Gen IV Reactors: safety issues in support to the design}

and operation”, organized by UNIPI, from 9th_{to 11}th_{May 2016, no contribution;}

- Study day at CISAM, topic: “Prevenzione e Protezione dal rischio radon”, 11th April 2016, no contribution;

- Study day at CISAM, topic: “Radioattività nelle acque”, 18th_{April, 2016, no contribution.}

- Summer School on Neutron Detectors and Related Applications, organized by UNITN, from 29th_{June to 2}nd_{July 2016,}

no contribution;

- 54° Corso Polvani – Forensica Nucleare e Dosimetria Retrospettiva, organized by Airp in Pisa, from 6th to 7th November, 2017;

- Convegno Nazionale AIRP – Sorgenti di radiazioni: dai modelli alle misure, Salerno, Italy, from 8th to 10th November 2017, Poster presentation and full work published in the proceedings of the conference;

- 4th_{International Workshop on CBRNe – IW CBRNe 2018: Countering Radiological and Nuclear Treats, held at Istituto}

Superiore Antincendi, Rome, Italy, 8th_{November 2018;}

- 7th_{Marko Moscovitch School, from the 19}th_{Solid State Dosimetry Conference, from 11}th_{to 14}th_{September, 2019,}

Hiroshima, Japan. No contribution.

- 19th_{Solid State Dosimetry Conference, from 15}th_{to 20}th_{September, 2019, Hiroshima, Japan. Contribution of an Oral}

Presentation.

EVENTUALE ATTIVITÀ DI RICERCA IN AZIENDA / SUBSEQUENT RESEARCH ACTIVITIES IN

COMPANIES (indicare denominazione, ente ospitante, periodo e luogo di svolgimento, eventuale

supervisore aziendale, attività svolte e risultati / please indicate the name, the hosting institution,

the period and duration of the activity, the subsequent company supervisor, activities carried out

and results)

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PUBBLICAZIONI (N.B. depositate in ARPI) / PUBLICATIONS (Filed in ARPI)

TIPOLOGIA PUBBLICAZIONE (articolo, proceeding, monografia, edizione fonti…) TYPOLOGY (article, proceeding, monography, source edition…) ALTRI AUTORI COAUTHORS TITOLO DELLA PUBBLICAZIONE TITLE ESTREMI DELLA PUBBLICAZIONE (rivista, editore, convegno, altro) PUBLICATION DETAILS (journal title, publishing company, conference title and so on) ISSN/ISBN Article - Francesco d’Errico - Ricardo Ciolini - Erik Hulber Track size distributions in CR-39 neutron dosimeters treated with carbon dioxide Radiation Measurements 106, pp. 607-611, 2017. doi: 10.1016/j.radmeas.2017.05.005 Proceeding - Francesco d’Errico - Ricardo Ciolini A new sensitization technique of CR-39 track detectors for improved neutron dosimetry Convegno Nazionale AIRP – Sorgenti di radiazioni: dai modelli alle misure

9788888648453

Article - Francesco d’Errico - Ricardo Ciolini A new sensitization technique combining CO2 and UV treatments for improved neutron dosimetry of CR-39 track detectors Radiation Measurements 125, pp. 85-88, 2019 doi: 10.1016/j.radmeas.2019.05.001.

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7 TIPOLOGIA PUBBLICAZIONE (articolo, proceeding, monografia, edizione fonti…) TYPOLOGY: ( article, proceeding, monography, source edition…) ALTRI AUTORI / COAUTHORS TITOLO DELLA PUBBLICAZIONE TITLE

ESTREMI DELLA PUBBLICAZIONE

(rivista, editore, convegno, altro)

PUBLICATION DETAILS

(journal title, publishing company, conference title and so on)

Article - Francesco

d’Errico - Ricardo

Ciolini

Sensitization effects on the tracks of neutron irradiated CR-39 detectors treated with CO2 under pressures greater

than 0.6 MPa

Radiation Measurements

ATTIVITÀ DI TUTORAGGIO E DIDATTICA INTEGRATIVA / TUTORING AND SUPPLEMENTARY

TEACHING ACTIVITIES

ALTRO / OTHER ACTIVITIES

- Cultore della materia per l’insegnamento “principi fisici dell’ingegneria nucleare” del Corso di Laurea in Ingegneria Nucleare

- Tutore nel corso Master Internazionali in “Protection against CBRNe events” all’Università di Tor Vergata a Roma