Studies of the nano scale voids and free volume in 40Ar ion irradiated solid state nuclear track detector by positron annihilation

被引：0

作者：

Kumar, Rajesh ^{[1
]}

Prasad, Rajendra ^{[1
]}

机构：

[1] Aligarh Muslim Univ, Z H Coll Engn & Technol, Dept Appl Phys, Aligarh 202002, Uttar Pradesh, India

来源：

INDIAN JOURNAL OF PURE & APPLIED PHYSICS | 2007年 / 45卷 / 09期

关键词：

ion beam modification; Makrofol-N polycarbonate film; positron annihilation lifetime; nano scale voids; free volume; BEAM MODIFICATION;

D O I：

暂无

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The bombardment of the polymeric materials with Swift Heavy Ions (SHI) results in the change of their free volume properties which have strong correlation with macroscopic properties of the polymeric material. Positron Annihilation Lifetime Spectroscopy (PALS) provides direct information about the dimension, content and hole size distribution of free volume in polymers. Makrofol-N polycarbonate films (40 mu m) were irradiated with Ar-40 ions of energy 14.9 MeV/n to the fluences of 10(5) ions/cm(2) from UNILAC, GSI Darmstadt, Germany. The effect of ion irradiation on free Volume and characterization by Positron Annihilation Lifetime Spectroscopy (PALS) has been Studied. Observed lifetime spectra were resolved into three components and o-Ps lifetime component was associated with the pick off annihilation of positronium trapped by the free Volume. The o-Ps lifetime and the average free volume are found to increase oil irradiation.

引用

页码：709 / 713

页数：5

共 33 条

[1]

[Anonymous], POLYIMIDES FUNDAMENT

[2]

[Anonymous], 1976, GLASS TRANSITION NAT

[3] DEFECT CREATION IN ALKALI-HALIDES UNDER DENSE ELECTRONIC EXCITATIONS - EXPERIMENTAL RESULTS ON NACL AND KBR [J].

BALANZAT, E ;

BOUFFARD, S ;

CASSIMI, A ;

DOORHYEE, E ;

PROTIN, L ;

GRANDIN, JP ;

DOUALAN, JL ;

MARGERIE, J .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 1994, 91 (1-4) :134-139

[4] RELATION BETWEEN STRUCTURE AND ELECTRONIC-PROPERTIES OF ION IRRADIATED POLYMERS [J].

DAVENAS, J ;

XU, XL ;

BOITEUX, G ;

SAGE, D .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 1989, 39 (1-4) :754-763

[5]

DURRANI SA, 1987, SOLID STATE NUCL TRU

[6] Efficient production of nanoporous particle track etched membranes with controlled properties [J].

Ferain, E ;

Legras, R .

RADIATION MEASUREMENTS, 2001, 34 (1-6) :585-588

[7] Pore shape control in nanoporous particle track etched membrane [J].

Ferain, E ;

Legras, R .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 2001, 174 (1-2) :116-122

[8] New ways of polymeric ion track characterization [J].

Fink, D ;

Müller, M ;

Ghosh, S ;

Dwivedi, KK ;

Vacik, J ;

Hnatowicz, V ;

Cervena, J ;

Kobayashi, Y ;

Hirata, K .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 1999, 156 (1-4) :170-176

[9]

Fleisher R.L., 1975, Nuclear Tracks in Solids: Principles and Applications

[10]

Jean Y. C., 1990, 3 INT WORKSH POS POS

← 1 2 3 4 →