Modified-Bloch-equation description of EPR transient nutations and free induction decay in solids

被引：10

作者：

Asadullina, NY ^{[1
]}

Asadullin, TY ^{[1
]}

Asadullin, YY ^{[1
]}

机构：

[1] Kazan State Tech Univ, Dept Gen Phys, Kazan 420111, Russia

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 2001年 / 13卷 / 14期

关键词：

D O I：

10.1088/0953-8984/13/14/319

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Based on the experimental work by Boscaino et al on the EPR transient nutations (TNs) and free induction decay (FID) in solids, we propose the modified Bloch equations (MBEs). In addition to the Tomita expression for power-dependent parameter T-2u, we give an original phenomenological expression for power-dependent parameter T-2v and tuning Delta. Both analytical (in the form of a Torrey solution with these parameters) and numerical solutions of MBE are obtained for TN and for different FID regimes with very good agreement between theory and experiment. We also discuss the meaning and role of the instantaneous diffusion mechanism in the transient pulse experiments.

引用

页码：3475 / 3489

页数：15

共 25 条

[1] Transient nutations decay: The effect of field-modified dipolar interaction [J].

Agnello, S ;

Boscaino, R ;

Cannas, M ;

Gelardi, FM ;

Shakhmuratov, RN .

PHYSICAL REVIEW A, 1999, 59 (05) :4087-4090

[2] FORMATION MECHANISMS AND PROPERTIES OF ELECTRON-SPIN ECHOES IN SOLIDS [J].

ASADULLIN, YY .

JOURNAL OF PHYSICS-CONDENSED MATTER, 1993, 5 (22) :3689-3698

[3] MODIFIED OPTICAL BLOCH EQUATIONS FOR SOLIDS [J].

BERMAN, PR ;

BREWER, RG .

PHYSICAL REVIEW A, 1985, 32 (05) :2784-2796

[4]

BLOCH F, 1946, PHYS REV, V70, P460, DOI 10.1103/PhysRev.70.460

[5] NON-BLOCH DECAY OF TRANSIENT NUTATIONS IN S = 1/2 SYSTEMS - AN EXPERIMENTAL INVESTIGATION [J].

BOSCAINO, R ;

GELARDI, FM ;

KORB, JP .

PHYSICAL REVIEW B, 1993, 48 (10) :7077-7085

[6] 2ND-HARMONIC FREE-INDUCTION DECAY IN A 2-LEVEL SPIN SYSTEM [J].

BOSCAINO, R ;

GELARDI, FM ;

MESSINA, G .

PHYSICAL REVIEW A, 1983, 28 (01) :495-497

[7] Coherent aspects of the local dipolar field in echo dynamics: A spectral narrowing effect [J].

Boscaino, R ;

Gelardi, FM ;

Cannas, M .

PHYSICAL REVIEW B, 1996, 53 (01) :302-306

[8] ANOMALOUS DECAY OF THE NUTATIONAL REGIME IN A 2-LEVEL SPIN SYSTEM [J].

BOSCAINO, R ;

GELARDI, FM ;

MANTEGNA, RN .

PHYSICS LETTERS A, 1987, 124 (6-7) :373-376

[9] FREE-INDUCTION DECAY AFTER SATURATION IN DILUTE RUBY [J].

BOSCAINO, R ;

GELARDI, FM .

PHYSICAL REVIEW A, 1992, 45 (01) :546-549

[10] INSTANTANEOUS DIFFUSION IN SPIN-ECHO DYNAMICS - A FREQUENCY-DOMAIN EXPERIMENTAL INVESTIGATION [J].

BOSCAINO, R ;

GELARDI, FM .

PHYSICAL REVIEW B, 1992, 46 (22) :14550-14558

← 1 2 3 →